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| n | a(n) |
|---|---|
| 1 | 23 |
| 2 | 747 |
| 3 | 8847 |
| 4 | 12654 |
| 5 | 166831 |
| 6 | 484471 |
| 7 | 573055 |
| 8 | 1248668 |
| 9 | 1602775 |
| 10 | 8764352 |
| 11 | 72820023 |
| 12 | 94338007 |
| 13 | 143404871 |
| 14 | 155195023 |
| 15 | 262310000 |
| 16 | 1529935249 |
| 17 | 4884962400 |
| 18 | 19571071932 |
| 19 | 146228748359 |
| 20 | 318603821009 |
| 21 | 635586109888 |
| 22 | 1305633968055 |
[23,747,8847,12654,166831,484471,573055,1248668, 1602775,8764352,72820023,94338007,143404871, 155195023,262310000,1529935249,4884962400, 19571071932,146228748359,318603821009, 635586109888,1305633968055] |