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A082047 Diagonal sums of number array A082046. 5
1, 2, 7, 24, 69, 170, 371, 736, 1353, 2338, 3839, 6040, 9165, 13482, 19307, 27008, 37009, 49794, 65911, 85976, 110677, 140778, 177123, 220640, 272345, 333346, 404847, 488152, 584669, 695914, 823515, 969216, 1134881, 1322498, 1534183 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..34.

Index entries for linear recurrences with constant coefficients, signature (6,-15,20,-15,6,-1).

FORMULA

a(n) = (n^5+15*n^3+14*n+30)/30 = (n+1)*(n^4-n^3+16*n^2-16*n+30)/30.

PROG

(PARI) a(n) = (n^5+15*n^3+14*n+30)/30; \\ Michel Marcus, Jan 22 2016

CROSSREFS

Cf. A082045, A082107.

Sequence in context: A022497 A258341 A054128 * A272483 A129020 A024024

Adjacent sequences:  A082044 A082045 A082046 * A082048 A082049 A082050

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 03 2003

STATUS

approved

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Last modified September 20 03:44 EDT 2020. Contains 337264 sequences. (Running on oeis4.)