A134238 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A134238

Row sums of triangle A134237.

3

1, 5, 14, 28, 47, 71, 100, 134, 173, 217, 266, 320, 379, 443, 512, 586, 665, 749, 838, 932, 1031, 1135, 1244, 1358, 1477, 1601, 1730, 1864, 2003, 2147, 2296, 2450, 2609, 2773, 2942, 3116, 3295, 3479, 3668, 3862, 4061, 4265, 4474, 4688, 4907, 5131

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..46.

Index entries for linear recurrences with constant coefficients, signature (3,-3,1).

FORMULA

Binomial transform of (1, 4, 5, 0, 0, 0, ...).

a(n) = a(n-1) + 5*n - 6 (with a(1)=1). - Vincenzo Librandi, Nov 23 2010

PROG

(PARI) a(n)=(5*n^2-7*n+4)/2 \\ Charles R Greathouse IV, Jun 17 2017

CROSSREFS

Sequence in context: A055454 A301294 A073347 * A024800 A005586 A197058

Adjacent sequences: A134235 A134236 A134237 * A134239 A134240 A134241

KEYWORD

nonn,easy

AUTHOR

Gary W. Adamson, Oct 14 2007

STATUS

approved