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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 46 |
| 3 | 1900 |
| 4 | 73028 |
| 5 | 2448599 |
| 6 | 75497242 |
| 7 | 2339274204 |
| 8 | 69674762468 |
| 9 | 1979828352817 |
| 10 | 54476556180342 |
| 11 | 1451352388018928 |
| 12 | 37417987990316376 |
| 13 | 936855054326483475 |
| 14 | 22833066202591181758 |
| 15 | 542259452432969505704 |
| 16 | 12569324678536063256324 |
| 17 | 284784345516356806067001 |
| 18 | 6313245421002223574950650 |
[0,1,46,1900,73028,2448599,75497242,2339274204, 69674762468,1979828352817,54476556180342, 1451352388018928,37417987990316376, 936855054326483475,22833066202591181758, 542259452432969505704,12569324678536063256324, 284784345516356806067001, 6313245421002223574950650] |