The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 75324 |
| 2 | 137407 |
| 3 | 236382 |
| 4 | 383714 |
| 5 | 901622 |
| 6 | 2225410 |
| 7 | 5145580 |
| 8 | 11331092 |
| 9 | 24907494 |
| 10 | 56952320 |
| 11 | 131317336 |
| 12 | 300971450 |
| 13 | 680102200 |
| 14 | 1545164810 |
| 15 | 3522195194 |
| 16 | 8043779858 |
| 17 | 18291387806 |
| 18 | 41624381340 |
| 19 | 94766666314 |
| 20 | 215979172968 |
| 21 | 491665678228 |
[75324,137407,236382,383714,901622,2225410, 5145580,11331092,24907494,56952320,131317336, 300971450,680102200,1545164810,3522195194, 8043779858,18291387806,41624381340,94766666314, 215979172968,491665678228] |