n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 8 |
4 | 37 |
5 | 198 |
6 | 1178 |
7 | 7548 |
8 | 50944 |
9 | 357855 |
10 | 2595250 |
11 | 19313372 |
12 | 146815503 |
13 | 1136158495 |
14 | 8927025989 |
15 | 71065654235 |
16 | 572215412354 |
17 | 4653746621835 |
18 | 38184724333615 |
19 | 315792633485360 |
20 | 2630183440412617 |
21 | 22046522161472304 |
[1,2,8,37,198,1178,7548,50944,357855,2595250, 19313372,146815503,1136158495,8927025989, 71065654235,572215412354,4653746621835, 38184724333615,315792633485360,2630183440412617, 22046522161472304] |