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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). 2
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 (list; graph; refs; listen; history; internal format)
OFFSET

2,8

LINKS

L. Bartholdi, Lamps, factorizations and finite fields, Amer. Math. Monthly, 107 (No. 5, 2000), 429-436.

Max Alekseyev, Table of n, a(n) for n = 2..1025

CROSSREFS

Cf. A046932.

Sequence in context: A176442 A053878 A070672 * A074465 A081229 A109010

Adjacent sequences:  A055058 A055059 A055060 * A055062 A055063 A055064

KEYWORD

nonn,changed

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jun 11 2000

EXTENSIONS

Edited and extended by Max Alekseyev (maxale(AT)gmail.com), Oct 19 2011

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.