n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 18 |
3 | 66 |
4 | 160 |
5 | 315 |
6 | 546 |
7 | 868 |
8 | 1296 |
9 | 1845 |
10 | 2530 |
11 | 3366 |
12 | 4368 |
13 | 5551 |
14 | 6930 |
15 | 8520 |
16 | 10336 |
17 | 12393 |
18 | 14706 |
19 | 17290 |
20 | 20160 |
21 | 23331 |
22 | 26818 |
23 | 30636 |
24 | 34800 |
25 | 39325 |
26 | 44226 |
27 | 49518 |
28 | 55216 |
29 | 61335 |
30 | 67890 |
31 | 74896 |
32 | 82368 |
33 | 90321 |
34 | 98770 |
35 | 107730 |
36 | 117216 |
37 | 127243 |
38 | 137826 |
39 | 148980 |
40 | 160720 |
[0,1,18,66,160,315,546,868,1296,1845,2530,3366, 4368,5551,6930,8520,10336,12393,14706,17290,20160, 23331,26818,30636,34800,39325,44226,49518,55216, 61335,67890,74896,82368,90321,98770,107730,117216, 127243,137826,148980,160720] |