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A091596
Expansion of x(1-2x^2)/(1-x-2x^2)^2.
1
0, 1, 2, 5, 12, 27, 62, 137, 304, 663, 1442, 3109, 6676, 14259, 30342, 64321, 135928, 286415, 601962, 1262173, 2640860, 5514731, 11495502, 23923065, 49710272, 103148807, 213754162, 442421397, 914668964, 1888990243, 3897285142
OFFSET
0,3
COMMENTS
Second column of A091595.
MATHEMATICA
CoefficientList[Series[x (1-2x^2)/(1-x-2x^2)^2, {x, 0, 30}], x] (* or *) LinearRecurrence[{2, 3, -4, -4}, {0, 1, 2, 5}, 40] (* Harvey P. Dale, Dec 01 2015 *)
CROSSREFS
Sequence in context: A086589 A299270 A190171 * A077863 A319172 A018009
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Jan 23 2004
STATUS
approved