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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 2 |
| 3 | 14 |
| 4 | 18 |
| 5 | 62 |
| 6 | 1526 |
| 7 | 2774 |
| 8 | 11122 |
| 9 | 49406 |
| 10 | 2540262 |
| 11 | 5702534 |
| 12 | 28096998 |
| 13 | 127292102 |
| 14 | 858021222 |
| 15 | 75126280334 |
| 16 | 205508734962 |
| 17 | 1175253646142 |
| 18 | 5966327985926 |
| 19 | 39249907301126 |
| 20 | 318734787636598 |
| 21 | 48540820805045366 |
| 22 | 155073505944502422 |
| 23 | 1031676773067082046 |
[1,2,2,14,18,62,1526,2774,11122,49406,2540262, 5702534,28096998,127292102,858021222,75126280334, 205508734962,1175253646142,5966327985926, 39249907301126,318734787636598,48540820805045366, 155073505944502422,1031676773067082046] |