n | a(n) |
---|---|
2 | 1 |
3 | 3 |
4 | 9 |
5 | 39 |
6 | 87 |
7 | 215 |
8 | 391 |
9 | 711 |
10 | 1326 |
11 | 1975 |
12 | 2925 |
13 | 4256 |
14 | 5696 |
15 | 7537 |
16 | 9774 |
17 | 12488 |
18 | 16322 |
19 | 20477 |
20 | 24966 |
21 | 30007 |
22 | 35336 |
23 | 41577 |
24 | 48466 |
25 | 56387 |
26 | 65796 |
27 | 75997 |
28 | 86606 |
29 | 98055 |
30 | 109936 |
31 | 122705 |
32 | 138834 |
33 | 155995 |
34 | 174764 |
35 | 194085 |
36 | 216286 |
37 | 239087 |
38 | 263736 |
39 | 290305 |
[1,3,9,39,87,215,391,711,1326,1975,2925,4256,5696, 7537,9774,12488,16322,20477,24966,30007,35336, 41577,48466,56387,65796,75997,86606,98055,109936, 122705,138834,155995,174764,194085,216286,239087, 263736,290305] |