OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (7,-21,35,-35,21,-7,1).
FORMULA
a(n) = (n + 1)*(n^2 + n + 1)*(n^3 + n^2 + n + 1).
G.f.: (1 + 17*x + 8*x^2*(21 + 43*x) + 5*x^4*(35 + 3*x))/(1 - x)^7. - Arkadiusz Wesolowski, Nov 01 2012
MATHEMATICA
Table[QFactorial[4, n], {n, 0, 29}] (* Arkadiusz Wesolowski, Nov 01 2012 *)
LinearRecurrence[{7, -21, 35, -35, 21, -7, 1}, {1, 24, 315, 2080, 8925, 29016, 77959}, 30] (* Harvey P. Dale, Aug 30 2020 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Franklin T. Adams-Watters, Apr 07 2002
STATUS
approved