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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

PROG

(MAGMA) [ n: n in [6..600 by 6] | not IsPrime(n-1) or not IsPrime(n+1) ]; [Brockhaus]

(PARI) forstep(n=6, 600, 6, if(!(isprime(n-1)&&isprime(n+1)), print1(n, ", "))) [Brockhaus]

CROSSREFS

Cf. A067611 (sequence divided by 6).

Sequence in context: A067341 A290016 A195008 * A273088 A067766 A078347

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

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Last modified September 23 21:14 EDT 2017. Contains 292391 sequences.