n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 28 |
4 | 130 |
5 | 702 |
6 | 4384 |
7 | 31516 |
8 | 260068 |
9 | 2445372 |
10 | 25796360 |
11 | 299286550 |
12 | 3751803964 |
13 | 50211590696 |
14 | 712746859372 |
15 | 10697637496288 |
16 | 169490803535680 |
17 | 2830925427778810 |
18 | 49785906936838240 |
19 | 921273098388684878 |
20 | 17944637546960083042 |
21 | 368472898102440537484 |
22 | 7993616254370783660414 |
23 | 183539682466936703629744 |
[1,2,7,28,130,702,4384,31516,260068,2445372, 25796360,299286550,3751803964,50211590696, 712746859372,10697637496288,169490803535680, 2830925427778810,49785906936838240, 921273098388684878,17944637546960083042, 368472898102440537484,7993616254370783660414, 183539682466936703629744] |