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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 143 |
| 3 | 1300 |
| 4 | 11181 |
| 5 | 93354 |
| 6 | 766363 |
| 7 | 6228560 |
| 8 | 50316761 |
| 9 | 404975494 |
| 10 | 3252010983 |
| 11 | 26077123020 |
| 12 | 208922159941 |
| 13 | 1672903158434 |
| 14 | 13390854662003 |
| 15 | 107164984268680 |
| 16 | 857510609012721 |
| 17 | 6861038546418174 |
| 18 | 54893076742927423 |
[1,14,143,1300,11181,93354,766363,6228560, 50316761,404975494,3252010983,26077123020, 208922159941,1672903158434,13390854662003, 107164984268680,857510609012721,6861038546418174, 54893076742927423] |