The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 634 |
| 2 | 1732 |
| 3 | 5622 |
| 4 | 10379 |
| 5 | 34891 |
| 6 | 120600 |
| 7 | 218388 |
| 8 | 776527 |
| 9 | 2785875 |
| 10 | 4949307 |
| 11 | 18191635 |
| 12 | 66629582 |
| 13 | 116701535 |
| 14 | 437583275 |
| 15 | 1622139182 |
| 16 | 2811915708 |
| 17 | 10676440663 |
| 18 | 39872706809 |
| 19 | 68597203451 |
| 20 | 262614612215 |
| 21 | 985534471328 |
| 22 | 1686109541499 |
[634,1732,5622,10379,34891,120600,218388,776527, 2785875,4949307,18191635,66629582,116701535, 437583275,1622139182,2811915708,10676440663, 39872706809,68597203451,262614612215,985534471328, 1686109541499] |