A026324 Expansion of 1/((1-2x)(1-6x)(1-7x)(1-8x)).

1, 23, 341, 4147, 45045, 455091, 4373797, 40541699, 365712149, 3230463379, 28067769093, 240654781731, 2041291828213, 17162300683187, 143239714105829, 1188212150789443, 9805989936743637, 80575358596047315

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (23, -188, 628, -672).

Formula

a(n) = -2^n/15 +27*6^n -343*7^n/5 +128*8^n/3. R. J. Mathar, Jun 23 2013

Crossrefs

Sequence in context: A028059 A299710 A028055 * A028039 A002118 A025993

Adjacent sequences: A026321 A026322 A026323 * A026325 A026326 A026327

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved