A047674 Row 5 of square array defined in A047671.

1, 16, 91, 346, 1021, 2524, 5479, 10774, 19609, 33544, 54547, 85042, 127957, 186772, 265567, 369070, 502705, 672640, 885835, 1150090, 1474093, 1867468, 2340823, 2905798, 3575113, 4362616, 5283331, 6353506, 7590661, 9013636

Offset

1,2

Links

Table of n, a(n) for n=1..30.

Formula

(1/5) * (2n^5 - 5n^4 + 20n^3 - 25n^2 + 23n - 10).

Crossrefs

Sequence in context: A195591 A240292 A050406 * A153029 A170920 A027938

Adjacent sequences: A047671 A047672 A047673 * A047675 A047676 A047677

Keyword

nonn

Author

N. J. A. Sloane

Status

approved