The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 8 |
| 4 | 13 |
| 5 | 44 |
| 6 | 75 |
| 7 | 106 |
| 8 | 243 |
| 9 | 380 |
| 10 | 517 |
| 11 | 654 |
| 12 | 791 |
| 13 | 2510 |
| 14 | 4229 |
| 15 | 5948 |
| 16 | 7667 |
| 17 | 9386 |
| 18 | 11105 |
| 19 | 12824 |
| 20 | 14543 |
| 21 | 16262 |
| 22 | 17981 |
| 23 | 19700 |
| 24 | 21419 |
| 25 | 23138 |
| 26 | 24857 |
| 27 | 26576 |
| 28 | 28295 |
| 29 | 30014 |
| 30 | 31733 |
| 31 | 33452 |
| 32 | 35171 |
| 33 | 36890 |
| 34 | 38609 |
| 35 | 40328 |
| 36 | 122703 |
| 37 | 205078 |
| 38 | 492531 |
| 39 | 27869189 |
| 40 | 166722603 |
| 41 | 305576017 |
[1,3,8,13,44,75,106,243,380,517,654,791,2510,4229, 5948,7667,9386,11105,12824,14543,16262,17981, 19700,21419,23138,24857,26576,28295,30014,31733, 33452,35171,36890,38609,40328,122703,205078, 492531,27869189,166722603,305576017] |