n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 21 |
4 | 225 |
5 | 882 |
6 | 2370 |
7 | 5175 |
8 | 9891 |
9 | 17220 |
10 | 27972 |
11 | 43065 |
12 | 63525 |
13 | 90486 |
14 | 125190 |
15 | 168987 |
16 | 223335 |
17 | 289800 |
18 | 370056 |
19 | 465885 |
20 | 579177 |
21 | 711930 |
22 | 866250 |
23 | 1044351 |
24 | 1248555 |
25 | 1481292 |
26 | 1745100 |
27 | 2042625 |
28 | 2376621 |
29 | 2749950 |
30 | 3165582 |
31 | 3626595 |
32 | 4136175 |
33 | 4697616 |
34 | 5314320 |
[0,0,21,225,882,2370,5175,9891,17220,27972,43065, 63525,90486,125190,168987,223335,289800,370056, 465885,579177,711930,866250,1044351,1248555, 1481292,1745100,2042625,2376621,2749950,3165582, 3626595,4136175,4697616,5314320] |