n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 11 |
5 | 52 |
6 | 307 |
7 | 1936 |
8 | 13207 |
9 | 93496 |
10 | 683988 |
11 | 5127163 |
12 | 39230669 |
13 | 305299420 |
14 | 2410624122 |
15 | 19273255184 |
16 | 155780437711 |
17 | 1271253542364 |
18 | 10462650241996 |
19 | 86765190816362 |
20 | 724450039738076 |
21 | 6086167189623746 |
22 | 51416796881915019 |
[1,1,1,3,11,52,307,1936,13207,93496,683988, 5127163,39230669,305299420,2410624122,19273255184, 155780437711,1271253542364,10462650241996, 86765190816362,724450039738076,6086167189623746, 51416796881915019] |