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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 56 |
| 2 | 7045 |
| 3 | 407367 |
| 4 | 15939998 |
| 5 | 492315490 |
| 6 | 13017110235 |
| 7 | 309183689612 |
| 8 | 6804360339112 |
| 9 | 141693764935536 |
| 10 | 2833749745048664 |
| 11 | 55021487525610716 |
| 12 | 1045661876232247218 |
| 13 | 19571912311804506186 |
| 14 | 362535974017212548973 |
| 15 | 6671022440871525234600 |
| 16 | 122311996588305966744504 |
[0,56,7045,407367,15939998,492315490,13017110235, 309183689612,6804360339112,141693764935536, 2833749745048664,55021487525610716, 1045661876232247218,19571912311804506186, 362535974017212548973,6671022440871525234600, 122311996588305966744504] |