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Search: id:A133802
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| A133802 |
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Even numbers which are not the sum of a pair of cousin primes. |
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+0
1
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| 2, 4, 8, 12, 68, 72, 76, 278, 282, 286, 638, 642, 644, 648, 652, 908, 912, 916, 1058, 1062, 1066, 1328, 1332, 1336, 1418, 1422, 2114, 2118, 2122, 2294, 2298, 2302, 2528, 2532, 2536, 2948, 2952
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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No other n < 10^9. Conjectured to be complete.
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REFERENCES
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D. Wells, Prime Numbers: The Most Mysterious Figures in Math. John Wiley & Sons, Inc., Hoboken, New Jersey, page 33.
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LINKS
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Eric Weisstein's World of Mathematics, Cousin Primes.
Marek Wolf, On the Twin and Cousin Primes.
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EXAMPLE
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The cousin primes < 100 are 3, 7, 11, 13, 17, 19, 23, 37, 41, 43, 47, 67, 71, 79, 83, 97. 76 is in the sequence because no combination of any two numbers from the set just enumerated can be summed to make 76.
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CROSSREFS
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Cf. A023200, A046132, A007534.
Sequence in context: A076745 A007374 A105207 this_sequence A076202 A114398 A107326
Adjacent sequences: A133799 A133800 A133801 this_sequence A133803 A133804 A133805
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KEYWORD
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fini,nonn
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AUTHOR
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Donovan Johnson (donovan.johnson(AT)yahoo.com), Jan 06 2008
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