

A267504


Primes n such that n1 is squarefree and all prime divisors of n1 other than 11 are in the sequence.


1



2, 3, 7, 23, 43, 47, 67, 139, 283, 463, 659, 947, 967, 1319, 1699, 1979, 3083, 4423, 5683, 5839, 6299, 9227, 10627, 11887, 13259, 18679, 19183, 19447, 19867, 21407, 26539, 30559, 35863, 37379, 39199, 41539, 44087, 44483, 45403, 55399, 63823, 71347, 71359, 74759, 91127, 91463, 115099, 130687, 132527
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

Is this sequence infinite?


LINKS

Table of n, a(n) for n=1..49.


MATHEMATICA

fa = FactorInteger; is[2, p_] = True; is[2, p_];
is[n_, p_] := PrimeQ[n] && MoebiusMu[n  1] ≠ 0 && Union@Table[is[fa[n  1][[i, 1]], p]  fa[n  1][[ i, 1]] == p , {i, Length[fa[n  1]]}] == {True}; Select[Prime[Range[10000]], is[#, 11] &]


CROSSREFS

Cf. A267503A267507, A005117, A227455, A227007, A227006.
Sequence in context: A072686 A002230 A106865 * A000057 A037231 A248525
Adjacent sequences: A267501 A267502 A267503 * A267505 A267506 A267507


KEYWORD

nonn


AUTHOR

José María Grau Ribas, Jan 16 2016


STATUS

approved



