n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 28 |
4 | 66 |
5 | 126 |
6 | 226 |
7 | 396 |
8 | 651 |
9 | 1001 |
10 | 1491 |
11 | 2184 |
12 | 3108 |
13 | 4284 |
14 | 5796 |
15 | 7752 |
16 | 10197 |
17 | 13167 |
18 | 16797 |
19 | 21252 |
20 | 26598 |
21 | 32890 |
22 | 40326 |
23 | 49140 |
24 | 59423 |
25 | 71253 |
26 | 84903 |
27 | 100688 |
28 | 118728 |
29 | 139128 |
30 | 162248 |
31 | 188496 |
32 | 218025 |
33 | 250971 |
34 | 287793 |
35 | 329004 |
36 | 374794 |
37 | 425334 |
38 | 481194 |
39 | 543004 |
[1,3,9,28,66,126,226,396,651,1001,1491,2184,3108, 4284,5796,7752,10197,13167,16797,21252,26598, 32890,40326,49140,59423,71253,84903,100688,118728, 139128,162248,188496,218025,250971,287793,329004, 374794,425334,481194,543004] |