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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 123 |
| 4 | 724 |
| 5 | 2525 |
| 6 | 6726 |
| 7 | 15127 |
| 8 | 30248 |
| 9 | 55449 |
| 10 | 95050 |
| 11 | 154451 |
| 12 | 240252 |
| 13 | 360373 |
| 14 | 524174 |
| 15 | 742575 |
| 16 | 1028176 |
| 17 | 1395377 |
| 18 | 1860498 |
| 19 | 2441899 |
| 20 | 3160100 |
| 21 | 4037901 |
| 22 | 5100502 |
| 23 | 6375623 |
| 24 | 7893624 |
| 25 | 9687625 |
| 26 | 11793626 |
| 27 | 14250627 |
| 28 | 17100748 |
| 29 | 20389349 |
| 30 | 24165150 |
| 31 | 28480351 |
| 32 | 33390752 |
[1,2,123,724,2525,6726,15127,30248,55449,95050, 154451,240252,360373,524174,742575,1028176, 1395377,1860498,2441899,3160100,4037901,5100502, 6375623,7893624,9687625,11793626,14250627, 17100748,20389349,24165150,28480351,33390752] |