n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 4 |
5 | 10 |
6 | 20 |
7 | 35 |
8 | 57 |
9 | 94 |
10 | 175 |
11 | 385 |
12 | 935 |
13 | 2289 |
14 | 5385 |
15 | 12031 |
16 | 25686 |
17 | 53176 |
18 | 108699 |
19 | 223215 |
20 | 465867 |
21 | 991088 |
22 | 2138884 |
23 | 4643816 |
24 | 10067197 |
25 | 21695156 |
26 | 46427790 |
27 | 98807200 |
28 | 209689343 |
29 | 444983081 |
30 | 946084386 |
31 | 2016738335 |
32 | 4308708305 |
33 | 9217134511 |
34 | 19720875625 |
[0,0,1,4,10,20,35,57,94,175,385,935,2289,5385, 12031,25686,53176,108699,223215,465867,991088, 2138884,4643816,10067197,21695156,46427790, 98807200,209689343,444983081,946084386,2016738335, 4308708305,9217134511,19720875625] |