OFFSET
0,4
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).
FORMULA
a(n) = (n^8 - (3*n-2)^4) / 2 for n>0.
G.f.: 8*x^3*(260+1131*x+750*x^2+335*x^3+75*x^4-30*x^5-x^6)/(1-x)^9. - Bruno Berselli, Aug 31 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Andrew Woods, Aug 30 2011
STATUS
approved