A011854 a(n) = floor(binomial(n,8)/8).

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 5, 20, 61, 160, 375, 804, 1608, 3038, 5469, 9447, 15746, 25436, 39971, 61289, 91933, 135196, 195284, 277509, 388513, 536518, 731615, 986090, 1314787, 1735519, 2269525, 2941977

Offset

0,11

Links

Table of n, a(n) for n=0..35.

Index entries for linear recurrences with constant coefficients, signature (9, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -9, 1).

Prog

(Sage) [floor(binomial(n, 8)/8) for n in range(0, 36)] # Zerinvary Lajos, Dec 01 2009
(PARI) a(n) = binomial(n, 8)\8; \\ Michel Marcus, Jan 28 2018

Crossrefs

A column of triangle A011857.

Sequence in context: A270939 A270631 A032340 * A203849 A271260 A270734

Adjacent sequences: A011851 A011852 A011853 * A011855 A011856 A011857

Keyword

nonn

Author

N. J. A. Sloane

Status

approved