n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 8 |
4 | 14 |
5 | 39 |
6 | 135 |
7 | 400 |
8 | 1310 |
9 | 4481 |
10 | 15005 |
11 | 50813 |
12 | 173538 |
13 | 590268 |
14 | 2009778 |
15 | 6857427 |
16 | 23374979 |
17 | 79672060 |
18 | 271719009 |
19 | 926494874 |
20 | 3158768148 |
21 | 10771237589 |
22 | 36728205113 |
23 | 125230802047 |
24 | 427013571111 |
25 | 1456037283696 |
26 | 4964723542111 |
[1,3,8,14,39,135,400,1310,4481,15005,50813,173538, 590268,2009778,6857427,23374979,79672060, 271719009,926494874,3158768148,10771237589, 36728205113,125230802047,427013571111, 1456037283696,4964723542111] |