n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 140 |
3 | 7084 |
4 | 420732 |
5 | 27343888 |
6 | 1882933364 |
7 | 134993766600 |
8 | 9969937491420 |
9 | 753310723010608 |
10 | 57956002331347120 |
11 | 4524678117939182220 |
12 | 357557785658996609700 |
13 | 28545588568201512137904 |
14 | 2298872717007844035521848 |
15 | 186533392975795702301759056 |
[1,4,140,7084,420732,27343888,1882933364, 134993766600,9969937491420,753310723010608, 57956002331347120,4524678117939182220, 357557785658996609700,28545588568201512137904, 2298872717007844035521848, 186533392975795702301759056] |