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| n | a(n) |
|---|---|
| 1 | 290 |
| 2 | 1528 |
| 3 | 4334 |
| 4 | 11280 |
| 5 | 25847 |
| 6 | 56676 |
| 7 | 118925 |
| 8 | 247753 |
| 9 | 515324 |
| 10 | 1087674 |
| 11 | 2331944 |
| 12 | 5093511 |
| 13 | 11294058 |
| 14 | 25360220 |
| 15 | 57445566 |
| 16 | 130937588 |
| 17 | 299629648 |
| 18 | 687412847 |
| 19 | 1579482633 |
| 20 | 3632619857 |
| 21 | 8359090437 |
| 22 | 19241386917 |
| 23 | 44298667688 |
| 24 | 101997419499 |
[290,1528,4334,11280,25847,56676,118925,247753, 515324,1087674,2331944,5093511,11294058,25360220, 57445566,130937588,299629648,687412847,1579482633, 3632619857,8359090437,19241386917,44298667688, 101997419499] |