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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 13 |
| 3 | 226 |
| 4 | 7889 |
| 5 | 458026 |
| 6 | 39684637 |
| 7 | 4788052298 |
| 8 | 766526598721 |
| 9 | 157108817646514 |
| 10 | 40104442275129101 |
| 11 | 12472587843118746322 |
| 12 | 4641978487740740993233 |
| 13 | 2036813028164774540010266 |
| 14 | 1040451608604560812273060189 |
| 15 | 612098707457003526384666111226 |
[1,2,13,226,7889,458026,39684637,4788052298, 766526598721,157108817646514,40104442275129101, 12472587843118746322,4641978487740740993233, 2036813028164774540010266, 1040451608604560812273060189, 612098707457003526384666111226] |