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A145285 a(n) = number of monomials in n-th power of polynomial x^4-x^3-x^2-x-1 0
5, 8, 12, 16, 20, 25, 28, 32, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

a(n)=Length[(x^4-x^3-x^2-x-1)^n]

MATHEMATICA

a = {}; k = x^4 - x^3 - x^2- x - 1; m = k; Do[AppendTo[a, Length[m]]; m = Expand[m*k], {n, 1, 100}]; a (*Artur Jasinski*)

CROSSREFS

Sequence in context: A047383 A133795 A190708 * A069102 A001043 A118775

Adjacent sequences:  A145282 A145283 A145284 * A145286 A145287 A145288

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Oct 06 2008

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.