A138006 Length of all the nontrivial cycles of the Ducci map modulo 2 for the dimensions in A138004.

3, 15, 7, 341, 819, 9709, 2047, 475107, 31, 3233097, 5461, 8388607, 3556769739, 31675383749, 65498251203, 575525617597, 34359738367, 549755813887, 182518930210733, 2047, 37905296863701641, 2251799813685247, 963770320257286037, 127, 4833046947311902523261, 82051117639860085587829, 2814530423790308547362667

Offset: 1

Author

T. D. Noe, Feb 26 2008

Keywords

• nonn

Links

• Max Alekseyev, Table of n, a(n) for n = 1..292

Crossrefs

Subsequence of A038553.

C.f. A135546, A138004.

Formula

a(n) = A038553(A138004(n)). - Max Alekseyev, Jul 10 2025

Extensions

Edited and terms a(23) onward added by Max Alekseyev, Jul 10 2025