OFFSET
0,2
LINKS
Stefano Spezia, Table of n, a(n) for n = 0..10000
Index entries for linear recurrences with constant coefficients, signature (6,-15,20,-15,6,-1).
FORMULA
a(n) = 1 + 5*n + 14*n^2 + 28*n^3 + 42*n^4 + 42*n^5, compare to row n = 5 of A009766.
G.f.: (1 + 126*x + 1530*x^2 + 2624*x^3 + 741*x^4 + 18*x^5)/(1-x)^6.
E.g.f.: exp(x)*(1 + 131*x + 1022*x^2 + 1330*x^3 + 462*x^4 + 42*x^5). - Stefano Spezia, Jul 21 2022
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Sep 13 2001
EXTENSIONS
More terms from Stefano Spezia, Jul 21 2022
STATUS
approved