The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 11 |
| 3 | 13 |
| 4 | 24 |
| 5 | 37 |
| 6 | 61 |
| 7 | 342 |
| 8 | 745 |
| 9 | 40572 |
| 10 | 81889 |
| 11 | 450017 |
| 12 | 531906 |
| 13 | 981923 |
| 14 | 1513829 |
| 15 | 2495752 |
| 16 | 13992589 |
| 17 | 30480930 |
| 18 | 1659962809 |
| 19 | 3350406548 |
| 20 | 18411995549 |
| 21 | 21762402097 |
| 22 | 40174397646 |
| 23 | 61936799743 |
| 24 | 102111197389 |
| 25 | 572492786688 |
| 26 | 1247096770765 |
| 27 | 67915718407998 |
[1,2,11,13,24,37,61,342,745,40572,81889,450017, 531906,981923,1513829,2495752,13992589,30480930, 1659962809,3350406548,18411995549,21762402097, 40174397646,61936799743,102111197389,572492786688, 1247096770765,67915718407998] |