A067413 Sixth column of triangle A067410.

1, 7, 84, 1008, 12096, 145152, 1741824, 20901888, 250822656, 3009871872, 36118462464, 433421549568, 5201058594816, 62412703137792, 748952437653504, 8987429251842048, 107849151022104576, 1294189812265254912

Offset: 0

Author

Wolfdieter Lang, Jan 25 2002

Keywords

• nonn
• easy

Comments

The fifth column is [1,6,60,600,6000,60000,...].

Links

• Index entries for linear recurrences with constant coefficients, signature (12).

Crossrefs

Cf. A067412 (fourth column), A067414 (seventh column), A001021 (powers of 12).

Formula

a(n)= A067410(n+5, 5). a(n)= 7*12^(n-1), n>=1, a(0)=1.

G.f.: (1-5*x)/(1-12*x).