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

Author

N. J. A. Sloane

Keywords

• nonn

Formula

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