A154225 List of pairs: {n*(n + 1)*(2*n + 1)/6, (n!)^2}.

0, 1, 1, 1, 5, 4, 14, 36, 30, 576, 55, 14400, 91, 518400, 140, 25401600, 204, 1625702400, 285, 131681894400, 385, 13168189440000, 506, 1593350922240000, 650, 229442532802560000, 819, 38775788043632640000, 1015

Offset

0,5

Links

G. C. Greubel, Table of n, a(n) for n = 0..500

Mathematica

Flatten[Table[{n*(n + 1)*(2*n + 1)/6, (n!)^2}, {n, 0, 15}]]

Crossrefs

Sequence in context: A107984 A133178 A377626 * A188627 A203976 A213566

Adjacent sequences: A154222 A154223 A154224 * A154226 A154227 A154228

Keyword

nonn,tabf

Author

Roger L. Bagula, Jan 05 2009

Status

approved