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A140952
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Expansion of 1/((1-x^2)*(1-x^3)*(1-x^5)*(1-x^7)*(1-x^11)).
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1
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1, 0, 1, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 8, 10, 11, 13, 15, 17, 19, 22, 25, 28, 31, 35, 39, 43, 48, 53, 58, 64, 70, 77, 84, 91, 100, 108, 117, 127, 137, 148, 159, 172, 184, 198, 212, 227, 243, 259, 277, 295, 314, 334, 355, 377, 400, 424, 449, 475, 502, 531, 560
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OFFSET
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0,6
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LINKS
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Alois P. Heinz, Table of n, a(n) for n = 0..1000
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MAPLE
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M := Matrix(28, (i, j)-> if (i=j-1) or (j=1 and member(i, [2, 3, 11, 15, 19, 20, 28])) then 1 elif j=1 and member(i, [8, 9, 13, 17, 25, 26]) then -1 else 0 fi); a := n -> (M^(n))[1, 1]; seq (a(n), n=0..50);
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CROSSREFS
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Sequence in context: A029024 A106244 A029023 * A096911 A143752 A145933
Adjacent sequences: A140949 A140950 A140951 * A140953 A140954 A140955
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KEYWORD
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nonn,easy
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AUTHOR
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Alois P. Heinz, Jul 25 2008
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STATUS
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approved
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