A067427 Seventh column of triangle A067425.

1, 10, 280, 7840, 219520, 6146560, 172103680, 4818903040, 134929285120, 3778019983360, 105784559534080, 2961967666954240, 82935094674718720, 2322182650892124160, 65021114224979476480, 1820591198299425341440

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..600

Index entries for linear recurrences with constant coefficients, signature (28).

Formula

a(n) = A067425(n+6, 6).

a(n) = 10*(4*7)^(n-1), n >= 1, a(0)=1.

G.f.: (1-18*x)/(1-28*x).

Mathematica

LinearRecurrence[{28}, {1, 10}, 20] (* Paolo Xausa, Oct 16 2024 *)

Prog

(Magma) [Ceiling(10*(4*7)^(n-1)): n in [0..20]]; // Vincenzo Librandi, Oct 03 2011

Crossrefs

Cf. A067426 (sixth column), A067428 (eighth column), A009972 (powers of 28).

Sequence in context: A290202 A203149 A117654 * A157713 A205824 A251580

Adjacent sequences: A067424 A067425 A067426 * A067428 A067429 A067430

Keyword

nonn,easy

Author

Wolfdieter Lang, Jan 25 2002

Status

approved