n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 38 |
6 | 111 |
7 | 332 |
8 | 1029 |
9 | 3232 |
10 | 10374 |
11 | 33679 |
12 | 110722 |
13 | 367252 |
14 | 1228558 |
15 | 4138120 |
16 | 14025473 |
17 | 47792389 |
18 | 163643066 |
19 | 562722427 |
20 | 1942548520 |
21 | 6729230281 |
22 | 23385132060 |
23 | 81503084084 |
24 | 284815902739 |
25 | 997741303308 |
26 | 3503112067273 |
[1,1,2,5,14,38,111,332,1029,3232,10374,33679, 110722,367252,1228558,4138120,14025473,47792389, 163643066,562722427,1942548520,6729230281, 23385132060,81503084084,284815902739,997741303308, 3503112067273] |