n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 4 |
5 | 12 |
6 | 20 |
7 | 40 |
8 | 70 |
9 | 150 |
10 | 284 |
11 | 564 |
12 | 1116 |
13 | 2212 |
14 | 4392 |
15 | 8768 |
16 | 17404 |
17 | 34704 |
18 | 69214 |
19 | 137980 |
20 | 275264 |
21 | 549340 |
22 | 1096244 |
23 | 2188344 |
24 | 4369196 |
25 | 8724196 |
26 | 17422500 |
27 | 34797476 |
28 | 69505628 |
29 | 138845940 |
30 | 277383904 |
31 | 554189344 |
32 | 1107296248 |
33 | 2212559996 |
34 | 4421289872 |
35 | 8835361488 |
[1,1,4,4,12,20,40,70,150,284,564,1116,2212,4392, 8768,17404,34704,69214,137980,275264,549340, 1096244,2188344,4369196,8724196,17422500,34797476, 69505628,138845940,277383904,554189344,1107296248, 2212559996,4421289872,8835361488] |