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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 17 |
| 3 | 129 |
| 4 | 621 |
| 5 | 2645 |
| 6 | 10350 |
| 7 | 40239 |
| 8 | 155199 |
| 9 | 581728 |
| 10 | 2085519 |
| 11 | 7121374 |
| 12 | 23225035 |
| 13 | 72683520 |
| 14 | 219218974 |
| 15 | 639377404 |
| 16 | 1808073511 |
| 17 | 4967931875 |
| 18 | 13286469360 |
| 19 | 34640551307 |
| 20 | 88162618939 |
| 21 | 219292820124 |
| 22 | 533661457600 |
| 23 | 1271821824645 |
[10,17,129,621,2645,10350,40239,155199,581728, 2085519,7121374,23225035,72683520,219218974, 639377404,1808073511,4967931875,13286469360, 34640551307,88162618939,219292820124,533661457600, 1271821824645] |