n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 18 |
4 | 121 |
5 | 896 |
6 | 7028 |
7 | 57406 |
8 | 483080 |
9 | 4159169 |
10 | 36462855 |
11 | 324391132 |
12 | 2921210383 |
13 | 26576350332 |
14 | 243901358678 |
15 | 2255283941595 |
16 | 20991223674553 |
17 | 196508265126327 |
18 | 1849038158249933 |
19 | 17478100523106657 |
20 | 165891345107764059 |
21 | 1580380321767062796 |
22 | 15106335141526197636 |
23 | 144839560162346664092 |
24 | 1392621873057558622860 |
25 | 13424503737125805253734 |
[1,1,3,18,121,896,7028,57406,483080,4159169, 36462855,324391132,2921210383,26576350332, 243901358678,2255283941595,20991223674553, 196508265126327,1849038158249933, 17478100523106657,165891345107764059, 1580380321767062796,15106335141526197636, 144839560162346664092,1392621873057558622860, 13424503737125805253734] |