| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 21 |
| 6 | 50 |
| 7 | 99 |
| 8 | 246 |
| 9 | 445 |
| 10 | 1157 |
| 11 | 2047 |
| 12 | 5326 |
| 13 | 9283 |
| 14 | 24453 |
| 15 | 41859 |
| 16 | 110486 |
| 17 | 187851 |
| 18 | 494411 |
| 19 | 834975 |
| 20 | 2190965 |
| 21 | 3680541 |
| 22 | 9626773 |
| 23 | 16101703 |
| 24 | 41973942 |
| 25 | 69956171 |
| 26 | 181823735 |
| 27 | 302099557 |
| 28 | 783084053 |
| 29 | 1297675587 |
| 30 | 3355767395 |
| 31 | 5548173975 |
| 32 | 14317233046 |
| 33 | 23623397329 |
| 34 | 60846853307 |
[1,1,2,4,10,21,50,99,246,445,1157,2047,5326,9283, 24453,41859,110486,187851,494411,834975,2190965, 3680541,9626773,16101703,41973942,69956171, 181823735,302099557,783084053,1297675587, 3355767395,5548173975,14317233046,23623397329, 60846853307] |