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A127091 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 48 |
| 4 | 727 |
| 5 | 15455 |
| 6 | 428338 |
| 7 | 14732200 |
| 8 | 607324669 |
| 9 | 29250572599 |
| 10 | 1614093015100 |
| 11 | 100494752982578 |
| 12 | 6973042276811149 |
| 13 | 533791252851029495 |
| 14 | 44701948131110427743 |
| 15 | 4066190846579443681053 |
| 16 | 399302066160095572863595 |
[1,1,5,48,727,15455,428338,14732200,607324669, 29250572599,1614093015100,100494752982578, 6973042276811149,533791252851029495, 44701948131110427743,4066190846579443681053, 399302066160095572863595] |