n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 6 |
4 | 21 |
5 | 34 |
6 | 113 |
7 | 188 |
8 | 607 |
9 | 1023 |
10 | 3246 |
11 | 5509 |
12 | 17290 |
13 | 29465 |
14 | 91820 |
15 | 156878 |
16 | 486549 |
17 | 832671 |
18 | 2574116 |
19 | 4410189 |
20 | 13602994 |
21 | 23323442 |
22 | 71826377 |
23 | 123216902 |
24 | 379031585 |
25 | 650462028 |
26 | 1999308247 |
27 | 3431941721 |
28 | 10542607578 |
29 | 18100449404 |
[1,1,4,6,21,34,113,188,607,1023,3246,5509,17290, 29465,91820,156878,486549,832671,2574116,4410189, 13602994,23323442,71826377,123216902,379031585, 650462028,1999308247,3431941721,10542607578, 18100449404] |