A102211 Numbers k with A102210(k) = 0.

1, 4, 8, 9, 12, 16, 20, 24, 28, 32, 33, 36, 40, 44, 48, 52, 56, 60, 64, 65, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 129, 132, 136, 140, 144, 148, 152, 156, 160, 161, 164, 168, 172, 176, 180, 184, 188, 192, 196, 200, 204, 208, 212, 216

Offset: 1

Author

Reinhard Zumkeller, Dec 30 2004

Keywords

• nonn
• base

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

A008586 is a subsequence.

Cf. A102210, A102212, A102213.

Programs

Magma

[k:k in [1..220]|#[p:p in PrimesUpTo(k)| p eq BitwiseAnd(k,p)] eq 0 ]; // Marius A. Burtea, Jan 12 2020

Mathematica

f[n_] := Count[Range[n], ?(PrimeQ[#] && BitAnd[n, #] == # &)]; Select[Range[216], f[#] == 0 &] (* _Amiram Eldar, Jan 12 2020 *)

Formula

A102210(a(n)) = 0.