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Search: id:A115049
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| A115049 |
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Numbers n such that starting with n-th prime, seven groups of three consecutive primes have prime totals. |
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+0
1
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| 4, 390, 393, 1724351, 2070298, 2155328, 3378096, 5333892, 5333895, 8520677, 11310117, 11436145, 13085496, 17272880, 25418046, 28636345, 33138545, 36896575, 37744498, 38493207, 45342669, 46960863, 59843398, 63107018
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Or, seven chunks of three consecutive primes with prime total.
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EXAMPLE
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n = 4 is OK because totals of seven groups of three consecutive primes p(4)+p(5)+p(6),...,p(22)+p(23)+p(24) equal to 31,59,97,131,173,211,251, all prime.
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CROSSREFS
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Adjacent sequences: A115046 A115047 A115048 this_sequence A115050 A115051 A115052
Sequence in context: A003753 A006237 A116031 this_sequence A036771 A080321 A125760
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Feb 28 2006
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EXTENSIONS
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Corrected and extended by Don Reble (djr(AT)nk.ca), Nov 22 2006
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