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| n | a(n) |
|---|---|
| 1 | 22 |
| 2 | 130 |
| 3 | 723 |
| 4 | 4393 |
| 5 | 26819 |
| 6 | 162916 |
| 7 | 986252 |
| 8 | 5942365 |
| 9 | 35694392 |
| 10 | 213988742 |
| 11 | 1280906379 |
| 12 | 7658873200 |
| 13 | 45771779047 |
| 14 | 273459449270 |
| 15 | 1633697384455 |
[22,130,723,4393,26819,162916,986252,5942365, 35694392,213988742,1280906379,7658873200, 45771779047,273459449270,1633697384455] |