n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 55 |
3 | 220 |
4 | 715 |
5 | 2001 |
6 | 4995 |
7 | 11385 |
8 | 24090 |
9 | 47905 |
10 | 90376 |
11 | 162955 |
12 | 282490 |
13 | 473110 |
14 | 768570 |
15 | 1215126 |
16 | 1875015 |
17 | 2830620 |
18 | 4189405 |
19 | 6089710 |
20 | 8707501 |
21 | 12264175 |
22 | 17035525 |
23 | 23361975 |
24 | 31660200 |
25 | 42436251 |
26 | 56300310 |
27 | 73983205 |
28 | 96354820 |
29 | 124444540 |
30 | 159463876 |
31 | 202831420 |
32 | 256200285 |
33 | 321488190 |
[1,10,55,220,715,2001,4995,11385,24090,47905, 90376,162955,282490,473110,768570,1215126,1875015, 2830620,4189405,6089710,8707501,12264175,17035525, 23361975,31660200,42436251,56300310,73983205, 96354820,124444540,159463876,202831420,256200285, 321488190] |