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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 508 |
| 3 | 33551 |
| 4 | 2751328 |
| 5 | 216056493 |
| 6 | 18084221125 |
| 7 | 1548424793743 |
| 8 | 135655041210402 |
| 9 | 12054551765023934 |
| 10 | 1084635554912125542 |
| 11 | 98583402030663969332 |
| 12 | 9035771475185456034956 |
[0,508,33551,2751328,216056493,18084221125, 1548424793743,135655041210402,12054551765023934, 1084635554912125542,98583402030663969332, 9035771475185456034956] |