| n | a(n) |
|---|---|
| 1 | 50 |
| 2 | 2500 |
| 3 | 64660 |
| 4 | 1006318 |
| 5 | 10804883 |
| 6 | 87613063 |
| 7 | 570145144 |
| 8 | 3107412546 |
| 9 | 14632983606 |
| 10 | 60951077586 |
| 11 | 228682697934 |
| 12 | 784020062496 |
| 13 | 2484771896660 |
| 14 | 7348846431262 |
| 15 | 20442258040721 |
| 16 | 53835488429681 |
| 17 | 134975315832464 |
[50,2500,64660,1006318,10804883,87613063, 570145144,3107412546,14632983606,60951077586, 228682697934,784020062496,2484771896660, 7348846431262,20442258040721,53835488429681, 134975315832464] |