The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 1 |
| 7 | 6 |
| 8 | 6 |
| 9 | 1 |
| 10 | 1 |
| 11 | 24 |
| 12 | 72 |
| 13 | 24 |
| 14 | 1 |
| 15 | 1 |
| 16 | 120 |
| 17 | 1440 |
| 18 | 1440 |
| 19 | 120 |
| 20 | 1 |
| 21 | 1 |
| 22 | 720 |
| 23 | 43200 |
| 24 | 172800 |
| 25 | 43200 |
| 26 | 720 |
| 27 | 1 |
| 28 | 1 |
| 29 | 5040 |
| 30 | 1814400 |
| 31 | 36288000 |
| 32 | 36288000 |
| 33 | 1814400 |
| 34 | 5040 |
| 35 | 1 |
| 36 | 1 |
| 37 | 40320 |
| 38 | 101606400 |
| 39 | 12192768000 |
| 40 | 60963840000 |
| 41 | 12192768000 |
| 42 | 101606400 |
| 43 | 40320 |
| 44 | 1 |
[1,1,1,1,2,1,1,6,6,1,1,24,72,24,1,1,120,1440,1440, 120,1,1,720,43200,172800,43200,720,1,1,5040, 1814400,36288000,36288000,1814400,5040,1,1,40320, 101606400,12192768000,60963840000,12192768000, 101606400,40320,1] |