A179209 n such that 2^(2n-1) mod (2n+1) = 2.

1, 4, 7, 10, 16, 19, 25, 28, 31, 34, 43, 46, 55, 61, 64, 70, 79, 88, 91, 97, 100, 106, 109, 118, 124, 133, 145, 151, 154, 157, 160, 163, 169, 190, 196, 199, 205, 208, 223, 226, 235, 244, 250, 259, 268, 271, 286, 289, 295, 298, 316, 334, 340, 343, 346, 349, 358, 361, 365, 376, 385, 394

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

{n: A178970(n)=2}.

Mathematica

Select[Range[400], PowerMod[2, 2#-1, 2#+1]==2&] (* Harvey P. Dale, Aug 16 2012 *)

Crossrefs

Cf. A000079, A178970, A179003.

Sequence in context: A138694 A359274 A177965 * A168565 A310711 A115288

Adjacent sequences: A179206 A179207 A179208 * A179210 A179211 A179212

Keyword

nonn

Author

Juri-Stepan Gerasimov, Jan 05 2011

Status

approved