The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 24 |
| 3 | 72 |
| 4 | 177 |
| 5 | 285 |
| 6 | 621 |
| 7 | 813 |
| 8 | 1278 |
| 9 | 1785 |
| 10 | 2541 |
| 11 | 2973 |
| 12 | 4653 |
| 13 | 5241 |
| 14 | 6585 |
| 15 | 8313 |
| 16 | 10266 |
| 17 | 11238 |
| 18 | 14787 |
| 19 | 15987 |
| 20 | 19767 |
| 21 | 22839 |
| 22 | 25863 |
| 23 | 27591 |
| 24 | 35031 |
| 25 | 37914 |
| 26 | 42030 |
| 27 | 46830 |
| 28 | 53550 |
| 29 | 56250 |
| 30 | 68346 |
| 31 | 71418 |
| 32 | 79419 |
| 33 | 86331 |
| 34 | 93135 |
| 35 | 100047 |
| 36 | 117792 |
| 37 | 122124 |
| 38 | 130524 |
| 39 | 139932 |
| 40 | 156672 |
[3,24,72,177,285,621,813,1278,1785,2541,2973,4653, 5241,6585,8313,10266,11238,14787,15987,19767, 22839,25863,27591,35031,37914,42030,46830,53550, 56250,68346,71418,79419,86331,93135,100047,117792, 122124,130524,139932,156672] |