OFFSET
0,1
LINKS
Paolo Xausa, Table of n, a(n) for n = 0..10000
Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).
FORMULA
From Stefano Spezia, Oct 17 2025: (Start)
a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4) for n > 3.
G.f.: (1331 + 6843*x + 2193*x^2 + x^3)/(1 - x)^4.
E.g.f.: exp(x)*(1331 + 10836*x + 9936*x^2 + 1728*x^3). (End)
MATHEMATICA
a[n_]:=(12*n + 11)^3; Array[a, 30, 0] (* Stefano Spezia, Oct 17 2025 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
a(23)-a(29) from Stefano Spezia, Oct 17 2025
STATUS
approved