n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 19 |
5 | 59 |
6 | 176 |
7 | 502 |
8 | 1374 |
9 | 3630 |
10 | 9312 |
11 | 23320 |
12 | 57279 |
13 | 138536 |
14 | 331032 |
15 | 783630 |
16 | 1841867 |
17 | 4306172 |
18 | 10028276 |
19 | 23288394 |
20 | 53974959 |
21 | 124925967 |
22 | 288878550 |
23 | 667602492 |
24 | 1542254655 |
25 | 3562000916 |
26 | 8225719574 |
[1,2,6,19,59,176,502,1374,3630,9312,23320,57279, 138536,331032,783630,1841867,4306172,10028276, 23288394,53974959,124925967,288878550,667602492, 1542254655,3562000916,8225719574] |