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A102213
Numbers m with A102210(m) > 1.
4
3, 7, 11, 13, 15, 19, 21, 23, 27, 29, 31, 35, 37, 39, 43, 45, 47, 51, 53, 55, 57, 59, 61, 63, 67, 71, 75, 77, 79, 83, 85, 87, 89, 91, 93, 95, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 131, 135, 139, 141, 143, 147, 149, 151, 153, 155, 157
OFFSET
1,1
LINKS
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..160]|#[p:p in PrimesUpTo(k)| p eq BitwiseAnd(k, p)] gt 1 ]; // Marius A. Burtea, Jan 12 2020
CROSSREFS
Subsequence of A005408.
Sequence in context: A111068 A322430 A337705 * A276283 A377232 A158942
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Dec 30 2004
STATUS
approved