A263645 -id:A263645 - cp's OEIS frontend

A263644 Odd numbers that are neither of the form p + 2^k nor of the form p - 2^k with k > 0, and p prime.

30666137, 31210219, 52109063, 52504261, 55414847, 55876981, 57816799, 60097043, 63723707, 68748319, 79933129, 87747827, 88486403, 93034073, 104218883, 131873509, 138385817, 152485283, 155269609, 158241023, 165795677, 166441831, 177702619, 197903207

Offset: 1

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Arkadiusz Wesolowski, Oct 22 2015

nonn

Odd n such that for all k > 0 the numbers n + 2^k and n - 2^k are nonprimes.

Cf. A006285, A076335, A076336. Subsequence of A255967. A263645 gives the primes.

A006285 INTERSECT A076336.

cp's OEIS Frontend

A263644 Odd numbers that are neither of the form p + 2^k nor of the form p - 2^k with k > 0, and p prime.

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