The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 50 |
| 2 | 191 |
| 3 | 801 |
| 4 | 3582 |
| 5 | 16673 |
| 6 | 79535 |
| 7 | 384984 |
| 8 | 1879575 |
| 9 | 9222654 |
| 10 | 45385845 |
| 11 | 223728645 |
| 12 | 1103952328 |
| 13 | 5450384180 |
| 14 | 26918312059 |
| 15 | 132969494589 |
| 16 | 656908143379 |
| 17 | 3245528085657 |
| 18 | 16035496065995 |
| 19 | 79229859441587 |
| 20 | 391472138972739 |
[50,191,801,3582,16673,79535,384984,1879575, 9222654,45385845,223728645,1103952328,5450384180, 26918312059,132969494589,656908143379, 3245528085657,16035496065995,79229859441587, 391472138972739] |