The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 170504 |
| 2 | 375458 |
| 3 | 1194944 |
| 4 | 3638432 |
| 5 | 8246808 |
| 6 | 22791266 |
| 7 | 59711718 |
| 8 | 169166380 |
| 9 | 447759396 |
| 10 | 1237374354 |
| 11 | 3333073203 |
| 12 | 9168863223 |
| 13 | 24999349110 |
| 14 | 68495198609 |
| 15 | 186835863523 |
| 16 | 510752061583 |
| 17 | 1394145438681 |
| 18 | 3809666645935 |
| 19 | 10406076490755 |
[170504,375458,1194944,3638432,8246808,22791266, 59711718,169166380,447759396,1237374354, 3333073203,9168863223,24999349110,68495198609, 186835863523,510752061583,1394145438681, 3809666645935,10406076490755] |