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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 14 |
| 4 | 45 |
| 5 | 104 |
| 6 | 149 |
| 7 | 998 |
| 8 | 3143 |
| 9 | 10427 |
| 10 | 23997 |
| 11 | 34424 |
| 12 | 574781 |
| 13 | 1183986 |
| 14 | 4126739 |
| 15 | 5310725 |
| 16 | 14748189 |
| 17 | 20058914 |
| 18 | 34807103 |
| 19 | 263708635 |
| 20 | 298515738 |
| 21 | 860740111 |
| 22 | 1159255849 |
| 23 | 2019995960 |
| 24 | 3179251809 |
| 25 | 8378499578 |
| 26 | 45071749699 |
| 27 | 98521998976 |
[1,2,3,14,45,104,149,998,3143,10427,23997,34424, 574781,1183986,4126739,5310725,14748189,20058914, 34807103,263708635,298515738,860740111,1159255849, 2019995960,3179251809,8378499578,45071749699, 98521998976] |