n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 20 |
3 | 74 |
4 | 180 |
5 | 355 |
6 | 616 |
7 | 980 |
8 | 1464 |
9 | 2085 |
10 | 2860 |
11 | 3806 |
12 | 4940 |
13 | 6279 |
14 | 7840 |
15 | 9640 |
16 | 11696 |
17 | 14025 |
18 | 16644 |
19 | 19570 |
20 | 22820 |
21 | 26411 |
22 | 30360 |
23 | 34684 |
24 | 39400 |
25 | 44525 |
26 | 50076 |
27 | 56070 |
28 | 62524 |
29 | 69455 |
30 | 76880 |
31 | 84816 |
32 | 93280 |
33 | 102289 |
34 | 111860 |
35 | 122010 |
36 | 132756 |
37 | 144115 |
38 | 156104 |
39 | 168740 |
[0,1,20,74,180,355,616,980,1464,2085,2860,3806, 4940,6279,7840,9640,11696,14025,16644,19570,22820, 26411,30360,34684,39400,44525,50076,56070,62524, 69455,76880,84816,93280,102289,111860,122010, 132756,144115,156104,168740] |