A129617 a(1) = 0; a(2) = a(3) = 1; for n > 3: a(n) = 16*a(n-2)+14*a(n-3).

0, 1, 1, 16, 30, 270, 704, 4740, 15044, 85696, 307064, 1581752, 6112768, 29606928, 119948816, 559289600, 2333678048, 10627917024, 45168903168, 202718165056, 871493289024, 3875855285248, 16781946935168, 74214590610304

Offset

1,4

Links

Table of n, a(n) for n=1..24.

Index entries for linear recurrences with constant coefficients, signature (0, 16, 14).

Formula

G.f.: -x^2*(1+x)/(-1+16*x^2+14*x^3). - R. J. Mathar, Nov 14 2007

Mathematica

a[1]=0; a[2]=1; a[3]=1; a[n_] := 16*a[n-2]+14*a[n-3]; Table[a[n], {n, 1, 25}]
LinearRecurrence[{0, 16, 14}, {0, 1, 1}, 30] (* Harvey P. Dale, Oct 15 2021 *)

Crossrefs

Sequence in context: A308026 A145581 A186453 * A221257 A194122 A257349

Adjacent sequences: A129614 A129615 A129616 * A129618 A129619 A129620

Keyword

nonn

Author

Roger L. Bagula, May 30 2007

Extensions

Edited by N. J. A. Sloane, Jul 26 2007

Status

approved