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1, 0, 2, 1, 2, 4, 1, 8, 2, 9, 10, 4, 25, 0, 34, 17, 18, 68, -15, 120, 2, 89, 154, -60, 393, -144, 418, 225, -94, 1156, -799, 1768, -254, 425, 2858, -2940, 6649, -3872, 4642, 4785, -7886, 21956, -20271, 26456, -2814, -11271, 61370, -78268, 117097, -72624, 33186, 128385, -240446, 435204
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..53.
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MATHEMATICA
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CoefficientList[Series[(1-x)^(-1)/(1+x-x^2-2x^3), {x, 0, 80}], x] (* From Harvey P. Dale, Mar 20 2011 *)
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PROG
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(PARI) Vec((1-x)^(-1)/(1+x-x^2-2*x^3)+O(x^99)) \\ Charles R Greathouse IV, Sep 27 2012
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CROSSREFS
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First differences are in A077971.
Sequence in context: A157751 A177701 A119765 * A105619 A121439 A009205
Adjacent sequences: A077898 A077899 A077900 * A077902 A077903 A077904
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KEYWORD
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sign,easy
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AUTHOR
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N. J. A. Sloane, Nov 17 2002
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STATUS
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approved
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