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| n | a(n) |
|---|---|
| 1 | 561 |
| 2 | 2465 |
| 3 | 62745 |
| 4 | 162401 |
| 5 | 656601 |
| 6 | 1909001 |
| 7 | 5444489 |
| 8 | 11921001 |
| 9 | 19384289 |
| 10 | 26719701 |
| 11 | 45318561 |
| 12 | 84350561 |
| 13 | 151530401 |
| 14 | 174352641 |
| 15 | 221884001 |
| 16 | 230996949 |
| 17 | 275283401 |
| 18 | 434932961 |
| 19 | 662086041 |
| 20 | 684106401 |
| 21 | 689880801 |
| 22 | 710382401 |
[561,2465,62745,162401,656601,1909001,5444489, 11921001,19384289,26719701,45318561,84350561, 151530401,174352641,221884001,230996949,275283401, 434932961,662086041,684106401,689880801,710382401] |