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Search: id:A078492
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| 200, 320, 510, 530, 620, 840, 890, 1070, 1130, 1140, 1260, 1330, 1340, 1350, 1410, 1460, 1500, 1640, 1670, 1680, 1710, 1760, 1790, 1850, 1890, 1920, 1960, 2040, 2070, 2100, 2180, 2190, 2320, 2360, 2400, 2480, 2490, 2510, 2560, 2580, 2820, 2940, 2980
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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Numbers n == 0 mod 10 such that n+1, n+3, n+7, n+9 not prime.
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PROGRAM
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(PARI) decadenopr(n1, n2) = { forstep(x=n1, n2, 10, if(!isprime(x+1) && !isprime(x+3) && !isprime(x+7) && !isprime(x+9), print1(x" "); ); ); }
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CROSSREFS
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Sequence in context: A114984 A118118 A124472 this_sequence A004966 A117412 A109632
Adjacent sequences: A078489 A078490 A078491 this_sequence A078493 A078494 A078495
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Jan 04 2003
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