n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 22 |
4 | 84 |
5 | 324 |
6 | 1254 |
7 | 4862 |
8 | 18876 |
9 | 73372 |
10 | 285532 |
11 | 1112412 |
12 | 4338536 |
13 | 16938120 |
14 | 66192390 |
15 | 258909390 |
16 | 1013586540 |
17 | 3971224620 |
18 | 15571021620 |
19 | 61096813140 |
20 | 239888764440 |
21 | 942483155640 |
22 | 3705043827420 |
23 | 14573172387852 |
24 | 57351122857944 |
[2,6,22,84,324,1254,4862,18876,73372,285532, 1112412,4338536,16938120,66192390,258909390, 1013586540,3971224620,15571021620,61096813140, 239888764440,942483155640,3705043827420, 14573172387852,57351122857944] |