A067408 Eighth column of triangle A067402.

1, 15, 960, 61440, 3932160, 251658240, 16106127360, 1030792151040, 65970697666560, 4222124650659840, 270215977642229760, 17293822569102704640, 1106804644422573096960, 70835497243044678205440, 4533471823554859405148160, 290142196707511001929482240, 18569100589280704123486863360

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Index entries for linear recurrences with constant coefficients, signature (64).

Formula

a(n) = A067402(n+7, 7).

G.f.: (1-49*x)/(1-64*x).

E.g.f.: (49 + 15*exp(64*x))/64. - Stefano Spezia, Sep 30 2022

Mathematica

LinearRecurrence[{64}, {1, 15}, 20] (* or *) Join[{1}, NestList[64#&, 15, 20]] (* Harvey P. Dale, Aug 25 2016 *)

Crossrefs

Cf. A067407 (seventh column), A067409 (ninth column).

Cf. A067402.

Sequence in context: A231121 A103639 A055413 * A274713 A229840 A102102

Adjacent sequences: A067405 A067406 A067407 * A067409 A067410 A067411

Keyword

nonn,easy

Author

Wolfdieter Lang, Jan 25 2002

Extensions

Incorrect formula deleted by Harvey P. Dale, Aug 25 2016

Status

approved