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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 16 |
| 3 | 115 |
| 4 | 131 |
| 5 | 246 |
| 6 | 377 |
| 7 | 623 |
| 8 | 1000 |
| 9 | 1623 |
| 10 | 12361 |
| 11 | 63428 |
| 12 | 202645 |
| 13 | 11006258 |
| 14 | 33221419 |
| 15 | 177113353 |
| 16 | 1273014890 |
| 17 | 1450128243 |
| 18 | 2723143133 |
| 19 | 4173271376 |
| 20 | 6896414509 |
| 21 | 11069685885 |
| 22 | 17966100394 |
| 23 | 136832388643 |
| 24 | 702128043609 |
| 25 | 2243216519470 |
| 26 | 121835820094989 |
[1,3,16,115,131,246,377,623,1000,1623,12361,63428, 202645,11006258,33221419,177113353,1273014890, 1450128243,2723143133,4173271376,6896414509, 11069685885,17966100394,136832388643,702128043609, 2243216519470,121835820094989] |