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| n | a(n) |
|---|---|
| 1 | 50 |
| 2 | 336 |
| 3 | 2167 |
| 4 | 14180 |
| 5 | 92429 |
| 6 | 603249 |
| 7 | 3935721 |
| 8 | 25680486 |
| 9 | 167558680 |
| 10 | 1093290051 |
| 11 | 7133495992 |
| 12 | 46544663377 |
| 13 | 303694712145 |
| 14 | 1981548052649 |
| 15 | 12929209539882 |
| 16 | 84360538526896 |
| 17 | 550435849841567 |
| 18 | 3591485193655532 |
| 19 | 23433731463177813 |
[50,336,2167,14180,92429,603249,3935721,25680486, 167558680,1093290051,7133495992,46544663377, 303694712145,1981548052649,12929209539882, 84360538526896,550435849841567,3591485193655532, 23433731463177813] |