A175156 a(n) = 2^(n-1) mod composite(n).

1, 2, 4, 8, 6, 8, 8, 8, 0, 8, 4, 11, 4, 8, 9, 8, 7, 4, 4, 0, 1, 32, 9, 32, 26, 2, 24, 8, 36, 32, 26, 32, 39, 42, 4, 20, 28, 7, 32, 8, 36, 32, 4, 2, 0, 57, 64, 60, 16, 2, 40, 60, 46, 48, 71, 50, 16, 8, 72, 32, 16, 32, 64, 8, 16, 32, 24, 35, 24

Offset

1,2

Links

Table of n, a(n) for n=1..69.

Prog

(PARI) lista(nn) = {compo = select(n->(! isprime(n) && (n != 1)), vector(nn, i, i)); for (i = 1, #compo, print1(2^(i-1) % compo[i], ", "); ); } \\ Michel Marcus, Sep 11 2013

Crossrefs

Cf. A000079, A002808, A175036, A175131.

Sequence in context: A246631 A320153 A138284 * A320152 A352763 A022478

Adjacent sequences: A175153 A175154 A175155 * A175157 A175158 A175159

Keyword

nonn

Author

Juri-Stepan Gerasimov, Dec 02 2010

Extensions

More terms from Michel Marcus, Sep 11 2013

Status

approved