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A067421

Sixth column of triangle A067417.

1, 8, 144, 2592, 46656, 839808, 15116544, 272097792, 4897760256, 88159684608, 1586874322944, 28563737812992, 514147280633856, 9254651051409408, 166583718925369344, 2998506940656648192

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OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..800

Index entries for linear recurrences with constant coefficients, signature (18).

FORMULA

a(n) = A067417(n+5, 5).

a(n) = 8*(3*6)^(n-1), n >= 1, a(0)=1.

G.f.: (1-10*x)/(1-18*x).

PROG

(Magma) [Ceiling(8*(3*6)^(n-1)): n in [0..20]]; // Vincenzo Librandi, Oct 02 2011

CROSSREFS

Cf. A067420 (fifth column), A067422 (seventh column), A001027 (powers of 18).

Sequence in context: A065409 A061899 A134492 * A124059 A275867 A052764

Adjacent sequences: A067418 A067419 A067420 * A067422 A067423 A067424

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Jan 25 2002

STATUS

approved

URL: https://oeis.org/A067421

⇱ A067421 - OEIS