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Search: id:A129812
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| A129812 |
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Lesser of consecutive prime pairs whose last digits differ by 6. |
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+0
1
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| 7, 19, 23, 31, 37, 53, 61, 67, 73, 79, 83, 97, 109, 127, 131, 151, 173, 229, 233, 251, 263, 271, 277, 307, 317, 331, 349, 353, 373, 379, 383, 397, 433, 439, 443, 457, 487, 499, 503, 541, 563, 571, 593, 601, 653, 733, 739, 751, 757, 769, 839, 859, 877, 907, 937
(list; graph; listen)
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OFFSET
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2,1
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COMMENT
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Conjecture: The number of terms in this sequence is infinite.
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EXAMPLE
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The last digits of the consecutive prime pair 7 and 11 differ by 6 so 7 is in the table.
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PROGRAM
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(PARI) \d can be 2, 4, 6, 8 primediffd(n, d) = { forprime(x=3, n, y=abs((nextprime(x+1)%10-x%10)); if(y==d, print1(x", ") ) ) }
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CROSSREFS
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Sequence in context: A123532 A113972 A082422 this_sequence A032680 A141831 A065749
Adjacent sequences: A129809 A129810 A129811 this_sequence A129813 A129814 A129815
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KEYWORD
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easy,nonn,base,less
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AUTHOR
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Cino Hilliard (hillcino368(AT)hotmail.com), May 19 2007
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