n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 32 |
5 | 436 |
6 | 9012 |
7 | 262760 |
8 | 10270696 |
9 | 518277560 |
10 | 32795928016 |
11 | 2542945605432 |
12 | 237106822506952 |
13 | 26173354092593696 |
14 | 3375693096567983232 |
15 | 502995942483693043200 |
16 | 85750135569136650473360 |
17 | 16583651916595710735271248 |
18 | 3611157196483089769387182064 |
19 | 879518067472225603327860638128 |
[1,1,4,32,436,9012,262760,10270696,518277560, 32795928016,2542945605432,237106822506952, 26173354092593696,3375693096567983232, 502995942483693043200,85750135569136650473360, 16583651916595710735271248, 3611157196483089769387182064, 879518067472225603327860638128] |