n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 46 |
3 | 170 |
4 | 630 |
5 | 2352 |
6 | 8844 |
7 | 33462 |
8 | 127270 |
9 | 486200 |
10 | 1864356 |
11 | 7171892 |
12 | 27665596 |
13 | 106977600 |
14 | 414538200 |
15 | 1609344270 |
16 | 6258307590 |
17 | 24373220520 |
18 | 95050101300 |
19 | 371125269900 |
20 | 1450670612820 |
21 | 5676173948640 |
22 | 22230262964520 |
23 | 87137141867100 |
24 | 341824599040860 |
25 | 1341897206800752 |
[1,12,46,170,630,2352,8844,33462,127270,486200, 1864356,7171892,27665596,106977600,414538200, 1609344270,6258307590,24373220520,95050101300, 371125269900,1450670612820,5676173948640, 22230262964520,87137141867100,341824599040860, 1341897206800752] |