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Search: id:A113156
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| A113156 |
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Primes such that the sum of the predecessor and successor primes is divisible by 37. |
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+0
15
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| 181, 443, 557, 661, 967, 1109, 1553, 1951, 2069, 2441, 2551, 3257, 3371, 4001, 4783, 5179, 5987, 6143, 6217, 6473, 6701, 6803, 6841, 7213, 8431, 8663, 8839, 8887, 9283, 9511, 9839, 9883, 10177, 10589, 10771, 10883, 11059, 11093, 11173, 11437, 11657
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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A112681 is mod 3 analogy. A112794 is mod 5 analogy. A112731 is mod 7 analogy. A112789 is mod 11 analogy. A112795 is mod 13 analogy. A112796 is mod 17 analogy. A112804 is mod 19 analogy. A112847 is mod 23 analogy. A112859 is mod 29 analogy.
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FORMULA
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a(n) = prime(i) is in this sequence iff prime(i-1)+prime(i+1) = 0 mod 37. a(n) = A000040(i) is in this sequence iff A000040(i-1)+A000040(i+1) = 0 mod 37.
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EXAMPLE
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a(1) = 181 since prevprime(181) + nextprime(181) = 179 + 191 = 370 = 37 * 10.
a(2) = 443 since prevprime(443) + nextprime(443) = 439 + 449 = 888 = 37 * 24.
a(3) = 557 since prevprime(557) + nextprime(557) = 547 + 563 = 1110 = 37 * 30.
a(4) = 661 since prevprime(661) + nextprime(661) = 659 + 673 = 1332 = 37 * 36.
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MATHEMATICA
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Prime@Select[Range[2, 1463], Mod[Prime[ # - 1] + Prime[ # + 1], 37] == 0 &] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A000040, A112681, A112794, A112731, A112789, A112795, A112796, A112804, A112847, A112859, A113155, A113156, A113157, A113158.
Adjacent sequences: A113153 A113154 A113155 this_sequence A113157 A113158 A113159
Sequence in context: A082444 A108847 A063360 this_sequence A067383 A107255 A069763
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost2(AT)yahoo.com), Jan 05 2006
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Jan 11 2006
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