n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 34 |
6 | 132 |
7 | 610 |
8 | 2929 |
9 | 15604 |
10 | 87310 |
11 | 526274 |
12 | 3325946 |
13 | 22270254 |
14 | 155986944 |
15 | 1146627256 |
16 | 8787134873 |
17 | 70227355786 |
18 | 583161239732 |
19 | 5027823752930 |
20 | 44899767806134 |
21 | 414877525216196 |
22 | 3959806750825202 |
23 | 38996757506464858 |
24 | 395743830189684984 |
25 | 4134132167169618654 |
26 | 44409120984298440176 |
[1,1,3,9,34,132,610,2929,15604,87310,526274, 3325946,22270254,155986944,1146627256,8787134873, 70227355786,583161239732,5027823752930, 44899767806134,414877525216196,3959806750825202, 38996757506464858,395743830189684984, 4134132167169618654,44409120984298440176] |