n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 40 |
5 | 134 |
6 | 527 |
7 | 1950 |
8 | 7904 |
9 | 30491 |
10 | 125199 |
11 | 498445 |
12 | 2067864 |
13 | 8381254 |
14 | 35053759 |
15 | 144098563 |
16 | 606147761 |
17 | 2516740364 |
18 | 10640646802 |
19 | 44529824218 |
20 | 189010047669 |
21 | 795948814046 |
22 | 3390234316109 |
23 | 14349091499960 |
24 | 61296338029127 |
25 | 260536427436212 |
26 | 1115820095516391 |
27 | 4759539900355647 |
[1,1,4,10,40,134,527,1950,7904,30491,125199, 498445,2067864,8381254,35053759,144098563, 606147761,2516740364,10640646802,44529824218, 189010047669,795948814046,3390234316109, 14349091499960,61296338029127,260536427436212, 1115820095516391,4759539900355647] |