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| n | a(n) |
|---|---|
| 1 | 241 |
| 2 | 713 |
| 3 | 2063 |
| 4 | 5812 |
| 5 | 16792 |
| 6 | 48226 |
| 7 | 137407 |
| 8 | 391892 |
| 9 | 1119476 |
| 10 | 3196951 |
| 11 | 9126981 |
| 12 | 26061757 |
| 13 | 74425495 |
| 14 | 212515956 |
| 15 | 606804945 |
| 16 | 1732733907 |
| 17 | 4947863676 |
| 18 | 14128324624 |
| 19 | 40342604370 |
| 20 | 115197578608 |
| 21 | 328943960511 |
| 22 | 939285398798 |
| 23 | 2682094110978 |
[241,713,2063,5812,16792,48226,137407,391892, 1119476,3196951,9126981,26061757,74425495, 212515956,606804945,1732733907,4947863676, 14128324624,40342604370,115197578608,328943960511, 939285398798,2682094110978] |