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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 109 |
| 4 | 522 |
| 5 | 3043 |
| 6 | 7838 |
| 7 | 21061 |
| 8 | 41110 |
| 9 | 81955 |
| 10 | 178510 |
| 11 | 302075 |
| 12 | 539382 |
| 13 | 885581 |
| 14 | 1297982 |
| 15 | 1869659 |
| 16 | 2758406 |
| 17 | 4076543 |
| 18 | 5566538 |
| 19 | 7670387 |
| 20 | 10274536 |
| 21 | 13158999 |
| 22 | 17017244 |
| 23 | 21645981 |
| 24 | 27634492 |
| 25 | 35865619 |
| 26 | 45423702 |
| 27 | 55700987 |
| 28 | 67534604 |
| 29 | 80208039 |
| 30 | 94691374 |
[1,10,109,522,3043,7838,21061,41110,81955,178510, 302075,539382,885581,1297982,1869659,2758406, 4076543,5566538,7670387,10274536,13158999, 17017244,21645981,27634492,35865619,45423702, 55700987,67534604,80208039,94691374] |