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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 22 |
| 4 | 117 |
| 5 | 821 |
| 6 | 7796 |
| 7 | 101417 |
| 8 | 1810093 |
| 9 | 44561794 |
| 10 | 1515368605 |
| 11 | 71428667861 |
| 12 | 4677209119632 |
| 13 | 426268582440013 |
| 14 | 54220470799325101 |
| 15 | 9632796180856419722 |
| 16 | 2397253932245127919389 |
| 17 | 835827069207839232602401 |
| 18 | 409329501365419311969616628 |
| 19 | 281600921299273941316256813501 |
| 20 | 272632759803890415543364253988037 |
| 21 | 371636574592049013061911521355729422 |
| 22 | 713832787857018847209335427225631327093 |
[1,5,22,117,821,7796,101417,1810093,44561794, 1515368605,71428667861,4677209119632, 426268582440013,54220470799325101, 9632796180856419722,2397253932245127919389, 835827069207839232602401, 409329501365419311969616628, 281600921299273941316256813501, 272632759803890415543364253988037, 371636574592049013061911521355729422, 713832787857018847209335427225631327093] |