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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 11 |
| 3 | 46 |
| 4 | 103 |
| 5 | 31461 |
| 6 | 31564 |
| 7 | 283973 |
| 8 | 599510 |
| 9 | 883483 |
| 10 | 4133442 |
| 11 | 25684135 |
| 12 | 363711332 |
| 13 | 1116818131 |
| 14 | 1480529463 |
| 15 | 20363701150 |
| 16 | 103299035213 |
| 17 | 123662736363 |
| 18 | 968938189754 |
| 19 | 22409241100705 |
| 20 | 23378179290459 |
| 21 | 396460109748049 |
[2,11,46,103,31461,31564,283973,599510,883483, 4133442,25684135,363711332,1116818131,1480529463, 20363701150,103299035213,123662736363, 968938189754,22409241100705,23378179290459, 396460109748049] |