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| n | a(n) |
|---|---|
| 1 | 252 |
| 2 | 2772 |
| 3 | 130284 |
| 4 | 651420 |
| 5 | 219528540 |
| 6 | 257067920340 |
| 7 | 4370154645780 |
| 8 | 292800361267260 |
| 9 | 11023640801351071740 |
| 10 | 13475008472558425746927448860 |
| 11 | 5107028211099643358085503117940 |
| 12 | 1313771981231475489737485570488833367540 |
| 13 | 40726931418175740181862052685153834393740 |
[252,2772,130284,651420,219528540,257067920340, 4370154645780,292800361267260, 11023640801351071740, 13475008472558425746927448860, 5107028211099643358085503117940, 1313771981231475489737485570488833367540, 40726931418175740181862052685153834393740] |