n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 34 |
4 | 150 |
5 | 678 |
6 | 3116 |
7 | 14494 |
8 | 68032 |
9 | 321590 |
10 | 1528776 |
11 | 7301142 |
12 | 35003238 |
13 | 168359754 |
14 | 812041860 |
15 | 3926147730 |
16 | 19022666310 |
17 | 92338836390 |
18 | 448968093320 |
19 | 2186194166950 |
20 | 10659569748370 |
21 | 52037098259090 |
22 | 254308709196660 |
[1,2,8,34,150,678,3116,14494,68032,321590,1528776, 7301142,35003238,168359754,812041860,3926147730, 19022666310,92338836390,448968093320, 2186194166950,10659569748370,52037098259090, 254308709196660] |