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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 19 |
| 3 | 1075 |
| 4 | 115955 |
| 5 | 19558470 |
| 6 | 4622269345 |
| 7 | 1428739165560 |
| 8 | 551211090935595 |
| 9 | 256653852463806955 |
| 10 | 140633739174235040170 |
| 11 | 88931024447225475920050 |
| 12 | 63897452586372538310261555 |
| 13 | 51509615229665486538200354125 |
| 14 | 46102293227619069563429377126200 |
[1,1,19,1075,115955,19558470,4622269345, 1428739165560,551211090935595,256653852463806955, 140633739174235040170,88931024447225475920050, 63897452586372538310261555, 51509615229665486538200354125, 46102293227619069563429377126200] |