n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 26 |
5 | 84 |
6 | 305 |
7 | 1086 |
8 | 4078 |
9 | 15461 |
10 | 60478 |
11 | 236475 |
12 | 944909 |
13 | 3810840 |
14 | 15527946 |
15 | 63575099 |
16 | 263179621 |
17 | 1096167860 |
18 | 4587850961 |
19 | 19302087093 |
20 | 81731578479 |
21 | 347390982785 |
22 | 1481651268480 |
23 | 6347010201749 |
24 | 27296848791921 |
25 | 117702207650679 |
26 | 509009215641176 |
27 | 2208567192496882 |
28 | 9607641406127315 |
[1,1,3,8,26,84,305,1086,4078,15461,60478,236475, 944909,3810840,15527946,63575099,263179621, 1096167860,4587850961,19302087093,81731578479, 347390982785,1481651268480,6347010201749, 27296848791921,117702207650679,509009215641176, 2208567192496882,9607641406127315] |