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

Author

Wolfdieter Lang, Jan 25 2002

Keywords

• nonn
• easy

Links

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

Crossrefs

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

Cf. A067402.

Programs

Mathematica

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

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

Extensions

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