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A082114 Diagonal sums of number array A082110. 1
1, 2, 9, 32, 89, 210, 441, 848, 1521, 2578, 4169, 6480, 9737, 14210, 20217, 28128, 38369, 51426, 67849, 88256, 113337, 143858, 180665, 224688, 276945, 338546, 410697, 494704, 591977, 704034, 832505, 979136, 1145793, 1334466, 1547273 (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+1)*(n^4-n^3+26*n^2-26*n+30)/30.

CROSSREFS

Cf. A082107, A082045.

Sequence in context: A109770 A242512 A198016 * A074084 A053152 A077644

Adjacent sequences:  A082111 A082112 A082113 * A082115 A082116 A082117

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 04 2003

STATUS

approved

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Last modified November 14 15:21 EST 2019. Contains 329126 sequences. (Running on oeis4.)