

A054775


Positive multiples of 6 which are not the midpoint of a pair of twin primes.


0



24, 36, 48, 54, 66, 78, 84, 90, 96, 114, 120, 126, 132, 144, 156, 162, 168, 174, 186, 204, 210, 216, 222, 234, 246, 252, 258, 264, 276, 288, 294, 300, 306, 318, 324, 330, 336, 342, 354, 360, 366, 372, 378, 384, 390, 396, 402, 408, 414, 426, 438, 444, 450, 456, 468, 474
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..56.


PROG

(MAGMA) [ n: n in [6..600 by 6]  not IsPrime(n1) or not IsPrime(n+1) ]; // Klaus Brockhaus, Aug 18 2010
(PARI) forstep(n=6, 600, 6, if(!(isprime(n1)&&isprime(n+1)), print1(n, ", "))) \\ Klaus Brockhaus, Aug 18 2010


CROSSREFS

Cf. A067611 (sequence divided by 6).
Sequence in context: A307682 A290016 A195008 * A273088 A067766 A306776
Adjacent sequences: A054772 A054773 A054774 * A054776 A054777 A054778


KEYWORD

nonn


AUTHOR

Stuart M. Ellerstein (ellerstein(AT)aol.com), May 19 2000


EXTENSIONS

Corrected by Zak Seidov and Klaus Brockhaus, Aug 18 2010
Edited by N. J. A. Sloane, Aug 19 2010


STATUS

approved



