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A140953 Expansion of 1/((1-x^2)*(1-x^3)*(1-x^5)*(1-x^7)*(1-x^11)*(1-x^13)). 1
1, 0, 1, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 9, 10, 12, 14, 16, 19, 21, 25, 28, 32, 36, 41, 46, 52, 58, 65, 72, 80, 89, 98, 109, 119, 132, 144, 158, 173, 189, 206, 224, 244, 264, 287, 310, 336, 362, 391, 421, 453, 487, 523, 561, 601, 644, 688, 736, 785, 838, 893 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

MAPLE

M := Matrix(41, (i, j)-> if (i=j-1) or (j=1 and member(i, [2, 3, 11, 19, 20, 21, 22, 30, 38, 39])) then 1 elif j=1 and member(i, [8, 9, 16, 17, 24, 25, 32, 33, 41]) then -1 else 0 fi); a := n -> (M^(n))[1, 1]; seq (a(n), n=0..50);

CROSSREFS

Sequence in context: A145816 A027583 A029022 * A112021 A000607 A114372

Adjacent sequences:  A140950 A140951 A140952 * A140954 A140955 A140956

KEYWORD

nonn,easy

AUTHOR

Alois P. Heinz, Jul 25 2008

STATUS

approved

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Last modified November 17 06:35 EST 2018. Contains 317275 sequences. (Running on oeis4.)