n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 42 |
5 | 164 |
6 | 649 |
7 | 2591 |
8 | 10408 |
9 | 41998 |
10 | 170050 |
11 | 690370 |
12 | 2808714 |
13 | 11446642 |
14 | 46715469 |
15 | 190876527 |
16 | 780679200 |
17 | 3195628806 |
18 | 13090353594 |
19 | 53655587034 |
20 | 220045073988 |
21 | 902842397664 |
22 | 3705876933930 |
23 | 15216954519222 |
24 | 62503485455208 |
[0,1,3,11,42,164,649,2591,10408,41998,170050, 690370,2808714,11446642,46715469,190876527, 780679200,3195628806,13090353594,53655587034, 220045073988,902842397664,3705876933930, 15216954519222,62503485455208] |