The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 9 |
| 5 | 15 |
| 6 | 6 |
| 7 | 64 |
| 8 | 154 |
| 9 | 120 |
| 10 | 30 |
| 11 | 625 |
| 12 | 1995 |
| 13 | 2340 |
| 14 | 1190 |
| 15 | 220 |
| 16 | 7776 |
| 17 | 31191 |
| 18 | 49315 |
| 19 | 38325 |
| 20 | 14595 |
| 21 | 2170 |
| 22 | 117649 |
| 23 | 571221 |
| 24 | 1142932 |
| 25 | 1204588 |
| 26 | 704102 |
| 27 | 215950 |
| 28 | 27076 |
| 29 | 2097152 |
| 30 | 11992688 |
| 31 | 29141994 |
| 32 | 38972388 |
| 33 | 30945432 |
| 34 | 14570976 |
| 35 | 3761310 |
| 36 | 409836 |
[1,2,2,9,15,6,64,154,120,30,625,1995,2340,1190, 220,7776,31191,49315,38325,14595,2170,117649, 571221,1142932,1204588,704102,215950,27076, 2097152,11992688,29141994,38972388,30945432, 14570976,3761310,409836] |