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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 575 |
| 3 | 9000 |
| 4 | 125661 |
| 5 | 1633410 |
| 6 | 20245675 |
| 7 | 242827500 |
| 8 | 2845466921 |
| 9 | 32788860390 |
| 10 | 373244969175 |
| 11 | 4210842870000 |
| 12 | 47192731209781 |
| 13 | 526333705304970 |
| 14 | 5848962216923075 |
| 15 | 64823992266568500 |
| 16 | 717024715753610241 |
[1,30,575,9000,125661,1633410,20245675,242827500, 2845466921,32788860390,373244969175,4210842870000, 47192731209781,526333705304970,5848962216923075, 64823992266568500,717024715753610241] |