n | a(n) |
---|---|
1 | 1 |
2 | 9 |
3 | 30 |
4 | 70 |
5 | 135 |
6 | 231 |
7 | 364 |
8 | 540 |
9 | 765 |
10 | 1045 |
11 | 1386 |
12 | 1794 |
13 | 2275 |
14 | 2835 |
15 | 3480 |
16 | 4216 |
17 | 5049 |
18 | 5985 |
19 | 7030 |
20 | 8190 |
21 | 9471 |
22 | 10879 |
23 | 12420 |
24 | 14100 |
25 | 15925 |
26 | 17901 |
27 | 20034 |
28 | 22330 |
29 | 24795 |
30 | 27435 |
31 | 30256 |
32 | 33264 |
33 | 36465 |
34 | 39865 |
35 | 43470 |
36 | 47286 |
37 | 51319 |
38 | 55575 |
39 | 60060 |
40 | 64780 |
[1,9,30,70,135,231,364,540,765,1045,1386,1794, 2275,2835,3480,4216,5049,5985,7030,8190,9471, 10879,12420,14100,15925,17901,20034,22330,24795, 27435,30256,33264,36465,39865,43470,47286,51319, 55575,60060,64780] |