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| n | a(n) |
|---|---|
| 0 | 19 |
| 1 | 39 |
| 2 | 136 |
| 3 | 175 |
| 4 | 836 |
| 5 | 1011 |
| 6 | 3869 |
| 7 | 8749 |
| 8 | 336331 |
| 9 | 681411 |
| 10 | 2380564 |
| 11 | 3061975 |
| 12 | 14628464 |
| 13 | 17690439 |
| 14 | 67699781 |
| 15 | 153090001 |
| 16 | 5885119819 |
| 17 | 11923329639 |
| 18 | 41655108736 |
| 19 | 53578438375 |
| 20 | 255968862236 |
| 21 | 309547300611 |
| 22 | 1184610764069 |
| 23 | 2678768828749 |
| 24 | 102977826256531 |
| 25 | 208634421341811 |
[19,39,136,175,836,1011,3869,8749,336331,681411, 2380564,3061975,14628464,17690439,67699781, 153090001,5885119819,11923329639,41655108736, 53578438375,255968862236,309547300611, 1184610764069,2678768828749,102977826256531, 208634421341811] |