n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 19 |
5 | 157 |
6 | 1306 |
7 | 19609 |
8 | 266372 |
9 | 5321721 |
10 | 101001214 |
11 | 2593742461 |
12 | 61920391842 |
13 | 1941507093541 |
14 | 56984643437138 |
15 | 2076518238897649 |
16 | 72340172854919941 |
17 | 3041324492229179281 |
18 | 121440691499123469858 |
19 | 5784852794328402307381 |
20 | 262799364106291328009626 |
[1,2,5,19,157,1306,19609,266372,5321721,101001214, 2593742461,61920391842,1941507093541, 56984643437138,2076518238897649,72340172854919941, 3041324492229179281,121440691499123469858, 5784852794328402307381,262799364106291328009626] |