A067416 Ninth column of triangle A067410.

1, 10, 180, 3240, 58320, 1049760, 18895680, 340122240, 6122200320, 110199605760, 1983592903680, 35704672266240, 642684100792320, 11568313814261760, 208229648656711680, 3748133675820810240, 67466406164774584320, 1214395310965942517760, 21859115597386965319680

Offset

0,2

Links

Paolo Xausa, Table of n, a(n) for n = 0..750

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

Formula

a(n) = A067410(n+8,8).

a(n) = 10*18^(n-1), n>=1, a(0)=1.

G.f.: (1-8*x)/(1-18*x).

E.g.f.: (4 + 5*exp(18*x))/9 = exp(9*x)*(cosh(9*x) + sinh(9*x)/9). - Elmo R. Oliveira, Jun 07 2026

Mathematica

Join[{1}, 10*18^Range[0, 20]] (* Paolo Xausa, Jun 23 2026 *)

Crossrefs

Cf. A067410.

Cf. A067415 (eighth column), A001027 (powers of 18).

Sequence in context: A261177 A367986 A113119 * A113671 A001762 A034908

Adjacent sequences: A067413 A067414 A067415 * A067417 A067418 A067419

Keyword

nonn,easy,changed

Author

Wolfdieter Lang, Jan 25 2002

Extensions

More terms from Elmo R. Oliveira, Jun 07 2026

Status

approved