A047664 Row 7 of square array defined in A047662.

7, 56, 287, 1120, 3591, 9912, 24319, 54272, 112071, 216952, 397727, 696032, 1170247, 1900152, 2992383, 4586752, 6863495, 10051512, 14437663, 20377184, 28305287, 38750008, 52346367, 69851904, 92163655, 120336632, 155603871

Offset

1,1

Links

Table of n, a(n) for n=1..27.

Formula

a(n) = (n/315) * (4*n^6 + 14*n^5 + 112*n^4 + 245*n^3 + 616*n^2 + 686*n + 528).

Crossrefs

Sequence in context: A244727 A090224 A237647 * A055345 A180287 A082140

Adjacent sequences: A047661 A047662 A047663 * A047665 A047666 A047667

Keyword

nonn

Author

N. J. A. Sloane

Status

approved