A047667 - OEIS

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A047667

Row 3 of array in A047666.

1

3, 10, 25, 52, 95, 158, 245, 360, 507, 690, 913, 1180, 1495, 1862, 2285, 2768, 3315, 3930, 4617, 5380, 6223, 7150, 8165, 9272, 10475, 11778, 13185, 14700, 16327, 18070, 19933, 21920, 24035, 26282, 28665, 31188, 33855, 36670, 39637

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

Index entries for linear recurrences with constant coefficients, signature (4, -6, 4, -1).

FORMULA

a(n) = (n/3) * (2n^2 + 7).

CROSSREFS

Sequence in context: A212068 A162607 A267574 * A192963 A000247 A097763

Adjacent sequences: A047664 A047665 A047666 * A047668 A047669 A047670

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved