n | a(n) |
---|---|
1 | 1 |
2 | 10 |
3 | 26 |
4 | 75 |
5 | 196 |
6 | 520 |
7 | 1361 |
8 | 3570 |
9 | 9346 |
10 | 24475 |
11 | 64076 |
12 | 167760 |
13 | 439201 |
14 | 1149850 |
15 | 3010346 |
16 | 7881195 |
17 | 20633236 |
18 | 54018520 |
19 | 141422321 |
20 | 370248450 |
21 | 969323026 |
22 | 2537720635 |
23 | 6643838876 |
24 | 17393796000 |
25 | 45537549121 |
26 | 119218851370 |
[1,10,26,75,196,520,1361,3570,9346,24475,64076, 167760,439201,1149850,3010346,7881195,20633236, 54018520,141422321,370248450,969323026,2537720635, 6643838876,17393796000,45537549121,119218851370] |