n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 8 |
3 | 36 |
4 | 114 |
5 | 558 |
6 | 1856 |
7 | 9384 |
8 | 31942 |
9 | 164322 |
10 | 566928 |
11 | 2948184 |
12 | 10262004 |
13 | 53761068 |
14 | 188306112 |
15 | 991821456 |
16 | 3490234182 |
17 | 18458523378 |
18 | 65190481904 |
19 | 345875613144 |
20 | 1225052975644 |
21 | 6516499594212 |
22 | 23134851823872 |
23 | 123325174525104 |
[1,3,8,36,114,558,1856,9384,31942,164322,566928, 2948184,10262004,53761068,188306112,991821456, 3490234182,18458523378,65190481904,345875613144, 1225052975644,6516499594212,23134851823872, 123325174525104] |