

A123960


Expansion of 2*x^4 / (1  11*x + 45*x^2  80*x^3 + 49*x^4).


0



0, 0, 0, 2, 22, 152, 842, 4084, 18116, 75408, 299730, 1152834, 4338280, 16126958, 59713888, 221713192, 829301072, 3132108250, 11945717358, 45938159040, 177695375802, 689616061412, 2679197337100, 10403108215760, 40332521702522
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OFFSET

1,4


LINKS



MATHEMATICA

M = {{2, 1, 0, 0}, {1, 3, 1, 0}, {0, 1, 3, 2}, {0, 0, 1, 3}}; v[1] = {0, 0, 0, 1}; v[n_] := v[n] = M.v[n  1]; a1 = Table[v[n][[1]], {n, 1, 50}]
LinearRecurrence[{11, 45, 80, 49}, {0, 0, 0, 2}, 30] (* Harvey P. Dale, Oct 05 2015 *)


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



