A067429 Ninth column of triangle A067425.

1, 12, 432, 15552, 559872, 20155392, 725594112, 26121388032, 940369969152, 33853318889472, 1218719480020992, 43873901280755712, 1579460446107205632, 56860576059859402752, 2046980738154938499072, 73691306573577785966592

Offset: 0

Author

Wolfdieter Lang, Jan 25 2002

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..600
• Index entries for linear recurrences with constant coefficients, signature (36).

Crossrefs

Cf. A067428 (eighth column), A009980 (powers of 36).

Programs

Magma

[Ceiling(12*(4*9)^(n-1)): n in [0..20]]; // Vincenzo Librandi, Oct 03 2011

Mathematica

Join[{1},NestList[36#&,12,20]] (* Harvey P. Dale, Feb 28 2017 *)

Formula

a(n) = A067425(n+8, 8).

a(n) = 12*(4*9)^(n-1), n >= 1, a(0)=1.

G.f.: (1-24*x)/(1-36*x).