n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 25 |
3 | 85 |
4 | 275 |
5 | 751 |
6 | 1955 |
7 | 4615 |
8 | 10460 |
9 | 22220 |
10 | 45628 |
11 | 89420 |
12 | 170340 |
13 | 313140 |
14 | 562020 |
15 | 980628 |
16 | 1676370 |
17 | 2800410 |
18 | 4596290 |
19 | 7399930 |
20 | 11732006 |
21 | 18297950 |
22 | 28155910 |
23 | 42716750 |
24 | 64037980 |
25 | 94823756 |
26 | 138922300 |
27 | 201325900 |
28 | 288988100 |
[1,5,25,85,275,751,1955,4615,10460,22220,45628, 89420,170340,313140,562020,980628,1676370,2800410, 4596290,7399930,11732006,18297950,28155910, 42716750,64037980,94823756,138922300,201325900, 288988100] |