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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 36 |
| 2 | 1793 |
| 3 | 24604 |
| 4 | 167481 |
| 5 | 756836 |
| 6 | 2620201 |
| 7 | 7526268 |
| 8 | 18831569 |
| 9 | 42374116 |
| 10 | 87654321 |
| 11 | 169343516 |
| 12 | 309160393 |
| 13 | 538155684 |
| 14 | 899445401 |
| 15 | 1451432956 |
| 16 | 2271560481 |
| 17 | 3460629668 |
| 18 | 5147732449 |
| 19 | 7495831836 |
| 20 | 10708033241 |
| 21 | 15034586596 |
| 22 | 20780659593 |
[1,36,1793,24604,167481,756836,2620201,7526268, 18831569,42374116,87654321,169343516,309160393, 538155684,899445401,1451432956,2271560481, 3460629668,5147732449,7495831836,10708033241, 15034586596,20780659593] |