The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 128 |
| 2 | 2916 |
| 3 | 16684 |
| 4 | 52700 |
| 5 | 129402 |
| 6 | 284254 |
| 7 | 590254 |
| 8 | 1183226 |
| 9 | 2313915 |
| 10 | 4440909 |
| 11 | 8390988 |
| 12 | 15630228 |
| 13 | 28711640 |
| 14 | 51997668 |
| 15 | 92801492 |
| 16 | 163153936 |
| 17 | 282488024 |
| 18 | 481647192 |
| 19 | 808773552 |
| 20 | 1337828696 |
| 21 | 2180752418 |
| 22 | 3504587582 |
| 23 | 5555307682 |
[128,2916,16684,52700,129402,284254,590254, 1183226,2313915,4440909,8390988,15630228,28711640, 51997668,92801492,163153936,282488024,481647192, 808773552,1337828696,2180752418,3504587582, 5555307682] |