A203837 Expansion of x^2*(1-x^2)*(1-3*x^2)/(1-x-5*x^2+4*x^3+5*x^4-3*x^5).

0, 0, 1, 1, 2, 3, 7, 12, 28, 51, 117, 221, 498, 964, 2138, 4212, 9219, 18401, 39850, 80333, 172520, 350437, 747658, 1527648, 3242589, 6655572, 14070946, 28983184, 61085625, 126167668, 265275043, 549067801, 1152293771, 2388951139, 5006276579, 10392343314, 21753656201, 45202392073, 94536770344, 196591219072

Offset

0,5

Links

Table of n, a(n) for n=0..39.

R. P. Stanley, An Equivalence Relation on the Symmetric Group and Multiplicity-free Flag h-Vectors

Index entries for linear recurrences with constant coefficients, signature (1,5,-4,-5,3).

Crossrefs

Sequence in context: A263658 A296517 A182692 * A342132 A032173 A130616

Adjacent sequences: A203834 A203835 A203836 * A203838 A203839 A203840

Keyword

nonn,easy

Author

N. J. A. Sloane, May 07 2012

Status

approved