n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 22 |
6 | 53 |
7 | 189 |
8 | 485 |
9 | 1688 |
10 | 4689 |
11 | 16650 |
12 | 47187 |
13 | 165262 |
14 | 485268 |
15 | 1728805 |
16 | 5174302 |
17 | 18049100 |
18 | 55269365 |
19 | 194672136 |
20 | 603386084 |
21 | 2099060047 |
22 | 6614696429 |
23 | 23137388920 |
24 | 73539215187 |
25 | 254877900451 |
26 | 819954155438 |
27 | 2849069767691 |
28 | 9230855030167 |
29 | 31891296634949 |
30 | 104243641176924 |
[1,1,3,7,22,53,189,485,1688,4689,16650,47187, 165262,485268,1728805,5174302,18049100,55269365, 194672136,603386084,2099060047,6614696429, 23137388920,73539215187,254877900451,819954155438, 2849069767691,9230855030167,31891296634949, 104243641176924] |