The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 140 |
| 2 | 1054 |
| 3 | 1068 |
| 4 | 4844 |
| 5 | 11209 |
| 6 | 19856 |
| 7 | 24949 |
| 8 | 28390 |
| 9 | 78184 |
| 10 | 423796 |
| 11 | 769516 |
| 12 | 4283544 |
| 13 | 5935168 |
| 14 | 13116053 |
| 15 | 122189752 |
| 16 | 441252296 |
| 17 | 528500308 |
| 18 | 636697392 |
| 19 | 669629030 |
| 20 | 669778082 |
| 21 | 1228748591 |
[140,1054,1068,4844,11209,19856,24949,28390,78184, 423796,769516,4283544,5935168,13116053,122189752, 441252296,528500308,636697392,669629030,669778082, 1228748591] |