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| n | a(n) |
|---|---|
| 1 | 403 |
| 2 | 1325 |
| 3 | 4388 |
| 4 | 14196 |
| 5 | 44525 |
| 6 | 136509 |
| 7 | 412006 |
| 8 | 1231112 |
| 9 | 3657629 |
| 10 | 10837431 |
| 11 | 32088956 |
| 12 | 95066910 |
| 13 | 281997715 |
| 14 | 837788285 |
| 15 | 2492972738 |
| 16 | 7429400340 |
| 17 | 22170161033 |
| 18 | 66233321571 |
| 19 | 198057333352 |
| 20 | 592697831402 |
| 21 | 1774742767583 |
| 22 | 5316672917289 |
[403,1325,4388,14196,44525,136509,412006,1231112, 3657629,10837431,32088956,95066910,281997715, 837788285,2492972738,7429400340,22170161033, 66233321571,198057333352,592697831402, 1774742767583,5316672917289] |