The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 528 |
| 2 | 320148 |
| 3 | 151930944 |
| 4 | 68226362100 |
| 5 | 30224743053408 |
| 6 | 13344339476900628 |
| 7 | 5886544966626029184 |
| 8 | 2596154092548752142900 |
| 9 | 1144924797553613766288288 |
| 10 | 504914149304802570026241108 |
| 11 | 222667396652606197017189081024 |
[528,320148,151930944,68226362100,30224743053408, 13344339476900628,5886544966626029184, 2596154092548752142900,1144924797553613766288288, 504914149304802570026241108, 222667396652606197017189081024] |