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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 513 |
| 3 | 701260 |
| 4 | 1273147785 |
| 5 | 2597337494136 |
| 6 | 5711975829039480 |
| 7 | 13239412829570653440 |
| 8 | 31902976888441563215025 |
| 9 | 79210992511055955027177700 |
| 10 | 201394898991255834414075013488 |
| 11 | 522024491776928458970588283023040 |
| 12 | 1374924298868439440732405164346591160 |
| 13 | 3670434093979203432106449568933449100800 |
| 14 | 9911788665178411118992936004423729374579200 |
[1,513,701260,1273147785,2597337494136, 5711975829039480,13239412829570653440, 31902976888441563215025, 79210992511055955027177700, 201394898991255834414075013488, 522024491776928458970588283023040, 1374924298868439440732405164346591160, 3670434093979203432106449568933449100800, 9911788665178411118992936004423729374579200] |