n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 28 |
4 | 115 |
5 | 500 |
6 | 2222 |
7 | 10067 |
8 | 46210 |
9 | 214561 |
10 | 1005078 |
11 | 4737301 |
12 | 22463677 |
13 | 107029474 |
14 | 511992191 |
15 | 2457370516 |
16 | 11830812439 |
17 | 57106820758 |
18 | 276269824537 |
19 | 1339241424340 |
20 | 6503928190006 |
21 | 31636482948413 |
22 | 154107605564757 |
23 | 751681548781630 |
24 | 3670810368631306 |
25 | 17945609466718551 |
26 | 87818303399821312 |
[1,2,7,28,115,500,2222,10067,46210,214561,1005078, 4737301,22463677,107029474,511992191,2457370516, 11830812439,57106820758,276269824537, 1339241424340,6503928190006,31636482948413, 154107605564757,751681548781630,3670810368631306, 17945609466718551,87818303399821312] |