The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 24 |
| 3 | 1 |
| 4 | 36 |
| 5 | 612 |
| 6 | 1 |
| 7 | 48 |
| 8 | 1104 |
| 9 | 15912 |
| 10 | 1 |
| 11 | 60 |
| 12 | 1740 |
| 13 | 32130 |
| 14 | 417690 |
| 15 | 1 |
| 16 | 72 |
| 17 | 2520 |
| 18 | 56700 |
| 19 | 912492 |
| 20 | 11027016 |
| 21 | 1 |
| 22 | 84 |
| 23 | 3444 |
| 24 | 91350 |
| 25 | 1750014 |
| 26 | 25562628 |
| 27 | 292215924 |
| 28 | 1 |
| 29 | 96 |
| 30 | 4512 |
| 31 | 137808 |
| 32 | 3059856 |
| 33 | 52303968 |
| 34 | 710025264 |
| 35 | 7764594552 |
| 36 | 1 |
| 37 | 108 |
| 38 | 5724 |
| 39 | 197802 |
| 40 | 4992354 |
[1,1,24,1,36,612,1,48,1104,15912,1,60,1740,32130, 417690,1,72,2520,56700,912492,11027016,1,84,3444, 91350,1750014,25562628,292215924,1,96,4512,137808, 3059856,52303968,710025264,7764594552,1,108,5724, 197802,4992354] |