OFFSET
1,1
COMMENTS
Seems to be the third column of A316349.
LINKS
Colin Barker, Table of n, a(n) for n = 1..1000
Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).
FORMULA
G.f.: 30*x*(1 + x) / (1 - x)^4.
a(n) = 30 * A000330(n).
a(n) = 10*n^3 + 15*n^2 + 5*n.
a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4) for n>4.
PROG
(PARI) Vec(30*x*(1 + x) / (1 - x)^4 + O(x^40))
(PARI) a(n) = 10*n^3 + 15*n^2 + 5*n
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Colin Barker, Aug 12 2018
STATUS
approved