A016252 Expansion of 1/((1-x)*(1-7x)*(1-10x)).

1, 18, 237, 2770, 30501, 324618, 3383437, 34795170, 354677301, 3593852218, 36268076637, 364987647570, 3666024644101, 36773283619818, 368524096449837, 3690779786259970, 36946569614930901, 369737098415627418

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Index entries for linear recurrences with constant coefficients, signature (18,-87,70).

Formula

a(n) = 17*a(n-1) - 70*a(n-2) + 1; a(0)=1, a(1)=18. - Vincenzo Librandi, Feb 10 2011

a(n) = (2*10^(n+2) - 3*7^(n+2) + 1)/54. - Yahia Kahloune, Jul 09 2013

Crossrefs

Sequence in context: A125453 A016256 A017065 * A016301 A058126 A016247

Adjacent sequences: A016249 A016250 A016251 * A016253 A016254 A016255

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved