Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 27 |
4 | 264 |
5 | 3480 |
6 | 57960 |
7 | 1168860 |
8 | 27716080 |
9 | 755797392 |
10 | 23309811000 |
11 | 802356730560 |
12 | 30495894175296 |
13 | 1268569374923136 |
14 | 57327261461502032 |
15 | 2796658399257297120 |
16 | 146484112541333548800 |
17 | 8199099498574437696000 |
18 | 488395687438426037605920 |
19 | 30847715523237047711124096 |
20 | 2059258090155754103465678080 |
[1,1,4,27,264,3480,57960,1168860,27716080, 755797392,23309811000,802356730560,30495894175296, 1268569374923136,57327261461502032, 2796658399257297120,146484112541333548800, 8199099498574437696000,488395687438426037605920, 30847715523237047711124096, 2059258090155754103465678080] |