n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 24 |
6 | 77 |
7 | 295 |
8 | 1329 |
9 | 6924 |
10 | 41030 |
11 | 272271 |
12 | 1996406 |
13 | 16000511 |
14 | 138953665 |
15 | 1298206570 |
16 | 12969761907 |
17 | 137846434950 |
18 | 1551712558368 |
19 | 18429620298121 |
20 | 230175973108212 |
21 | 3014142623764514 |
22 | 41275488455847862 |
23 | 589698136493691293 |
[1,1,2,4,9,24,77,295,1329,6924,41030,272271, 1996406,16000511,138953665,1298206570,12969761907, 137846434950,1551712558368,18429620298121, 230175973108212,3014142623764514, 41275488455847862,589698136493691293] |