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1,1
Complement of A062729.
Table of n, a(n) for n=1..71.
36 is included because 36 is divisible by 3 and 3+2 is a prime.
(PARI) isok(n) = {my(f = factor(n)); for (i=1, #f~, p = f[i, 1]; if (isprime(p-2) || isprime(p+2), return (1)); ); return (0); } \\ Michel Marcus, May 20 2014
Sequence in context: A057716 A138591 A136492 * A213199 A184987 A242437
Adjacent sequences: A062503 A062504 A062505 * A062507 A062508 A062509
nonn
Leroy Quet, Jul 09 2001
Offset changed to 1 by Michel Marcus, May 20 2014
approved