The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 1933 |
| 3 | 3820 |
| 4 | 14888 |
| 5 | 62390 |
| 6 | 290466 |
| 7 | 1276012 |
| 8 | 5745438 |
| 9 | 26249179 |
| 10 | 117931466 |
| 11 | 529767543 |
| 12 | 2397639048 |
| 13 | 10849215458 |
| 14 | 49036526523 |
| 15 | 221822852403 |
| 16 | 1003695687810 |
| 17 | 4540550678347 |
| 18 | 20545128422585 |
| 19 | 92986082536821 |
| 20 | 420869471627171 |
[8,1933,3820,14888,62390,290466,1276012,5745438, 26249179,117931466,529767543,2397639048, 10849215458,49036526523,221822852403, 1003695687810,4540550678347,20545128422585, 92986082536821,420869471627171] |