n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 54 |
3 | 210 |
4 | 660 |
5 | 1782 |
6 | 4290 |
7 | 9438 |
8 | 19305 |
9 | 37180 |
10 | 68068 |
11 | 119340 |
12 | 201552 |
13 | 329460 |
14 | 523260 |
15 | 810084 |
16 | 1225785 |
17 | 1817046 |
18 | 2643850 |
19 | 3782350 |
20 | 5328180 |
21 | 7400250 |
22 | 10145070 |
23 | 13741650 |
24 | 18407025 |
25 | 24402456 |
26 | 32040360 |
27 | 41692024 |
28 | 53796160 |
[1,10,54,210,660,1782,4290,9438,19305,37180,68068, 119340,201552,329460,523260,810084,1225785, 1817046,2643850,3782350,5328180,7400250,10145070, 13741650,18407025,24402456,32040360,41692024, 53796160] |