A102212 Numbers m with A102210(m) = 1.

2, 5, 6, 10, 14, 17, 18, 22, 25, 26, 30, 34, 38, 41, 42, 46, 49, 50, 54, 58, 62, 66, 69, 70, 73, 74, 78, 81, 82, 86, 90, 94, 97, 98, 102, 106, 110, 114, 118, 122, 126, 130, 133, 134, 137, 138, 142, 145, 146, 150, 154, 158, 162, 166, 170, 174, 177, 178, 182, 186, 190

Offset

1,1

Comments

;

Links

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

Formula

A102210(a(n)) = 1.

Mathematica

f[n_] := Count[Range[n], _?(PrimeQ[#] && BitAnd[n, #] == # &)]; Select[Range[216], f[#] == 1 &] (* Amiram Eldar, Jan 12 2020 *)

Prog

(Magma) [k:k in [1..200]|#[p:p in PrimesUpTo(k)| p eq BitwiseAnd(k, p)] eq 1 ]; // Marius A. Burtea, Jan 12 2020

Crossrefs

A016825 is a subsequence.

Cf. A102210, A102211, A102213.

Sequence in context: A075823 A368045 A191748 * A191124 A281379 A348565

Adjacent sequences: A102209 A102210 A102211 * A102213 A102214 A102215

Keyword

nonn,base

Author

Reinhard Zumkeller, Dec 30 2004

Status

approved