A055061 LCM of (2^d - 1) where d runs over the degrees of irreducible factors of x^n + x + 1 over GF(2), divided by A046932(n).

1, 1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 15, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 15, 1, 99, 1, 1, 31, 21, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 17, 1, 3, 1, 1, 1, 19, 1, 1, 1, 1, 1, 3, 1, 1, 1, 63, 1, 1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 5, 3, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 3, 5, 1, 1, 1, 1, 1, 91, 127, 7

Offset: 2

Author

N. J. A. Sloane, Jun 11 2000

Keywords

• nonn

Links

• Max Alekseyev, Table of n, a(n) for n = 2..1223
• L. Bartholdi, Lamps, factorizations and finite fields, Amer. Math. Monthly, 107 (No. 5, 2000), 429-436.

Crossrefs

Cf. A046932.

Extensions

Edited and extended by Max Alekseyev, Oct 19 2011

b-file extended by Max Alekseyev, Aug 17 2015