OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..350
Index entries for linear recurrences with constant coefficients, signature (781,-101530,2538250,-12203125,9765625).
FORMULA
a(n) = [x^(5^n)] Product_{j=1..5} 1/(1-x^j).
G.f.: (1953125*x^5+4828125*x^4-2015125*x^3+96440*x^2-774*x+1) / Product_{j=0..4} 1-5^j*x.
MAPLE
gf:= (1953125*x^5+4828125*x^4-2015125*x^3+96440*x^2-774*x+1)/mul(1-5^j*x, j=0..4):
a:= n-> coeff(series(gf, x, n+1), x, n):
seq(a(n), n=0..20);
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 01 2014
STATUS
approved