n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 52 |
4 | 320 |
5 | 2486 |
6 | 23402 |
7 | 258252 |
8 | 3263528 |
9 | 46433648 |
10 | 734322672 |
11 | 12776283136 |
12 | 242519067056 |
13 | 4987324250416 |
14 | 110454579648688 |
15 | 2621008072506592 |
16 | 66341399843669760 |
17 | 1784150447268259456 |
18 | 50804574646886197888 |
19 | 1527058892582680257024 |
[1,3,11,52,320,2486,23402,258252,3263528,46433648, 734322672,12776283136,242519067056,4987324250416, 110454579648688,2621008072506592, 66341399843669760,1784150447268259456, 50804574646886197888,1527058892582680257024] |