|
| |
|
|
A047990
|
|
a(n+1)=a(n)+(n^2+1)*a(n-1).
|
|
2
| |
|
|
1, 2, 4, 14, 54, 292, 1696, 12500, 97300, 909800, 8888400, 100778200, 1185163000, 15798002000, 217275712000, 3329482106000, 52433793018000, 908110694260000, 16113910669480000, 311249886303980000, 6144485548655740000
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
