n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 41 |
5 | 196 |
6 | 1057 |
7 | 7042 |
8 | 87473 |
9 | 2004328 |
10 | 50881121 |
11 | 1200507694 |
12 | 26179091017 |
13 | 538344201292 |
14 | 10635924720449 |
15 | 204889902343666 |
16 | 3902206399428833 |
17 | 74966895289570768 |
18 | 1511315984060460865 |
19 | 34267718094037895638 |
20 | 937490346932078590841 |
21 | 30931366331911427839156 |
[1,1,3,10,41,196,1057,7042,87473,2004328,50881121, 1200507694,26179091017,538344201292, 10635924720449,204889902343666,3902206399428833, 74966895289570768,1511315984060460865, 34267718094037895638,937490346932078590841, 30931366331911427839156] |