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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 34 |
| 3 | 250 |
| 4 | 1954 |
| 5 | 15370 |
| 6 | 120994 |
| 7 | 952570 |
| 8 | 7499554 |
| 9 | 59043850 |
| 10 | 464851234 |
| 11 | 3659766010 |
| 12 | 28813276834 |
| 13 | 226846448650 |
| 14 | 1785958312354 |
| 15 | 14060820050170 |
| 16 | 110700602088994 |
| 17 | 871543996661770 |
| 18 | 6861651371205154 |
| 19 | 54021666972979450 |
| 20 | 425311684412630434 |
| 21 | 3348471808328064010 |
| 22 | 26362462782211881634 |
[10,34,250,1954,15370,120994,952570,7499554, 59043850,464851234,3659766010,28813276834, 226846448650,1785958312354,14060820050170, 110700602088994,871543996661770,6861651371205154, 54021666972979450,425311684412630434, 3348471808328064010,26362462782211881634] |