n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 7 |
3 | 29 |
4 | 113 |
5 | 506 |
6 | 2321 |
7 | 11112 |
8 | 54429 |
9 | 272364 |
10 | 1384701 |
11 | 7135397 |
12 | 37178543 |
13 | 195556526 |
14 | 1036967927 |
15 | 5537451445 |
16 | 29752654081 |
17 | 160731437308 |
18 | 872518135861 |
19 | 4756932856431 |
20 | 26035840213731 |
21 | 143003903810742 |
22 | 787983925181427 |
[1,4,7,29,113,506,2321,11112,54429,272364,1384701, 7135397,37178543,195556526,1036967927,5537451445, 29752654081,160731437308,872518135861, 4756932856431,26035840213731,143003903810742, 787983925181427] |