The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 34 |
| 3 | 107 |
| 4 | 210 |
| 5 | 768 |
| 6 | 1898 |
| 7 | 8211 |
| 8 | 37402 |
| 9 | 192579 |
| 10 | 635086 |
| 11 | 2366644 |
| 12 | 9742518 |
| 13 | 38088673 |
| 14 | 149636652 |
| 15 | 590014096 |
| 16 | 2364716800 |
| 17 | 9270827068 |
| 18 | 36956377972 |
| 19 | 147747894211 |
| 20 | 585280946044 |
[5,34,107,210,768,1898,8211,37402,192579,635086, 2366644,9742518,38088673,149636652,590014096, 2364716800,9270827068,36956377972,147747894211, 585280946044] |