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| n | a(n) |
|---|---|
| 1 | 1123 |
| 2 | 1436 |
| 3 | 6795 |
| 4 | 26072 |
| 5 | 85617 |
| 6 | 274100 |
| 7 | 1062118 |
| 8 | 3488342 |
| 9 | 12721239 |
| 10 | 41920830 |
| 11 | 155836702 |
| 12 | 510815882 |
| 13 | 1888254136 |
| 14 | 6209495774 |
| 15 | 22984035493 |
| 16 | 75470825466 |
| 17 | 279286307313 |
| 18 | 917683052186 |
| 19 | 3395646295243 |
| 20 | 11155308717668 |
| 21 | 41278408039419 |
[1123,1436,6795,26072,85617,274100,1062118, 3488342,12721239,41920830,155836702,510815882, 1888254136,6209495774,22984035493,75470825466, 279286307313,917683052186,3395646295243, 11155308717668,41278408039419] |