n | a(n) |
---|---|
1 | 4 |
2 | 15 |
3 | 35 |
4 | 165 |
5 | 255 |
6 | 615 |
7 | 1815 |
8 | 1876 |
9 | 2636 |
10 | 2948 |
11 | 5380 |
12 | 5565 |
13 | 11235 |
14 | 28545 |
15 | 288380 |
16 | 903644 |
17 | 1807995 |
18 | 2486165 |
19 | 2674060 |
20 | 10538572 |
21 | 11791595 |
22 | 14145121 |
23 | 28558415 |
24 | 45153277 |
25 | 45682751 |
[4,15,35,165,255,615,1815,1876,2636,2948,5380, 5565,11235,28545,288380,903644,1807995,2486165, 2674060,10538572,11791595,14145121,28558415, 45153277,45682751] |