A124090 C(n,7)-1.

0, 7, 35, 119, 329, 791, 1715, 3431, 6434, 11439, 19447, 31823, 50387, 77519, 116279, 170543, 245156, 346103, 480699, 657799, 888029, 1184039, 1560779, 2035799, 2629574, 3365855, 4272047, 5379615, 6724519, 8347679, 10295471, 12620255

Offset

7,2

Links

Table of n, a(n) for n=7..38.

Index entries for linear recurrences with constant coefficients, signature (8, -28, 56, -70, 56, -28, 8, -1).

Maple

[seq(binomial(n, 7)-1, n=7..47)];

Mathematica

Binomial[Range[7, 50], 7]-1 (* or *) LinearRecurrence[{8, -28, 56, -70, 56, -28, 8, -1}, {0, 7, 35, 119, 329, 791, 1715, 3431}, 40] (* Harvey P. Dale, Aug 14 2014 *)

Crossrefs

Cf. A000096, A062748, A063258, A062988.

Sequence in context: A309920 A307041 A325732 * A250284 A328019 A327243

Adjacent sequences: A124087 A124088 A124089 * A124091 A124092 A124093

Keyword

easy,nonn

Author

Zerinvary Lajos, Nov 25 2006

Status

approved