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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 10 |
| 5 | 22 |
| 6 | 51 |
| 7 | 125 |
| 8 | 293 |
| 9 | 696 |
| 10 | 1657 |
| 11 | 3928 |
| 12 | 9330 |
| 13 | 22157 |
| 14 | 52601 |
| 15 | 124905 |
| 16 | 296578 |
| 17 | 704191 |
| 18 | 1672062 |
| 19 | 3970178 |
| 20 | 9426875 |
| 21 | 22383417 |
| 22 | 53147701 |
| 23 | 126195160 |
| 24 | 299640813 |
| 25 | 711474236 |
| 26 | 1689341342 |
| 27 | 4011212253 |
| 28 | 9524317645 |
| 29 | 22614766177 |
| 30 | 53697038226 |
| 31 | 127499523515 |
[1,2,3,10,22,51,125,293,696,1657,3928,9330,22157, 52601,124905,296578,704191,1672062,3970178, 9426875,22383417,53147701,126195160,299640813, 711474236,1689341342,4011212253,9524317645, 22614766177,53697038226,127499523515] |