n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 15 |
3 | 40 |
4 | 114 |
5 | 371 |
6 | 1422 |
7 | 6334 |
8 | 32238 |
9 | 184655 |
10 | 1175454 |
11 | 8231308 |
12 | 62882262 |
13 | 520416569 |
14 | 4638303786 |
15 | 44292536061 |
16 | 451160065069 |
17 | 4882696090609 |
18 | 55951575728713 |
19 | 676777708544967 |
20 | 8617001415386120 |
21 | 115200823068725262 |
22 | 1613460678695102980 |
23 | 23624702309844184487 |
[1,5,15,40,114,371,1422,6334,32238,184655,1175454, 8231308,62882262,520416569,4638303786,44292536061, 451160065069,4882696090609,55951575728713, 676777708544967,8617001415386120, 115200823068725262,1613460678695102980, 23624702309844184487] |