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A130104
Expansion of x(1-3x+5x^2-2x^3)/((1-x)^3*(1-2x)).
2
0, 1, 2, 6, 17, 43, 100, 220, 467, 969, 1982, 4018, 8101, 16279, 32648, 65400, 130919, 261973, 524098, 1048366, 2096921, 4194051, 8388332, 16776916, 33554107, 67108513, 134217350, 268435050, 536870477, 1073741359
OFFSET
0,3
COMMENTS
a(n+1)=A014833(n+2).
Partial sums of A130103.
FORMULA
a(n)=2^(n+1)-C(n+2,2)-0^n.
MATHEMATICA
Accumulate[Join[{0, 1}, LinearRecurrence[{4, -5, 2}, {1, 4, 11}, 40]]] (* Harvey P. Dale, May 16 2014 *)
Join[{0}, LinearRecurrence[{5, -9, 7, -2}, {1, 2, 6, 17}, 29]] (* Ray Chandler, Aug 03 2015 *)
CROSSREFS
Sequence in context: A252814 A072077 A229732 * A014833 A019439 A018024
KEYWORD
easy,nonn
AUTHOR
Paul Barry, May 07 2007
STATUS
approved