OFFSET
0,3
LINKS
Muniru A Asiru, Table of n, a(n) for n = 0..10000
FORMULA
MAPLE
seq(coeff(series((1-2*x+2*x^2)*(1+x^2)/(1-x)^3, x, n+1), x, n), n = 0 .. 55); # Muniru A Asiru, Jan 02 2019
MATHEMATICA
Join[{1, 1}, Table[n^2 + n + 3, {n, 0, 47}]] (* Jon Maiga, Jan 02 2019 *)
PROG
(PARI) {a(n)=polcoeff((1-2*x+2*x^2)*(1+x^2)/(1-x+x*O(x^n))^3, n, x)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 27 2006
STATUS
approved