A122929 Multiplicative order of 2 mod A141232(n).

11, 28, 36, 52, 48, 60, 52, 148, 76, 68, 51, 52, 29, 92, 156, 92, 29, 179, 166, 100, 44, 102, 239, 156, 50, 25, 51, 364, 224, 204, 244, 166, 66, 346, 194, 388, 618, 92, 388, 102, 660, 371, 388, 29, 772, 828, 239, 460, 55, 292, 431, 166, 882, 1060, 532, 155, 68

Offset

1,1

Links

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

Prog

(PARI) a137576(n)=my(t); sumdiv(2*n+1, d, eulerphi(d)/(t=znorder(Mod(2, d))))*t-t+1;
lista(nn) = {forcomposite(n=1, nn, if ((n % 2) && (a137576((n-1)/2) == n), print1(znorder(Mod(2, n)), ", "); ); ); } \\ Michel Marcus, Feb 09 2015

Crossrefs

Cf. A141232, A002326, A001262, A141216.

Sequence in context: A376144 A362528 A137019 * A030756 A065006 A291058

Adjacent sequences: A122926 A122927 A122928 * A122930 A122931 A122932

Keyword

nonn

Author

Vladimir Shevelev, Jul 05 2008, Jul 12 2008, Jul 23 2008

Extensions

More terms from Michel Marcus, Feb 09 2015

Status

approved