n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 6 |
7 | 21 |
8 | 56 |
9 | 126 |
10 | 251 |
11 | 461 |
12 | 786 |
13 | 1281 |
14 | 1981 |
15 | 2981 |
16 | 4311 |
17 | 6131 |
18 | 8436 |
19 | 11496 |
20 | 15246 |
21 | 20076 |
22 | 25851 |
23 | 33166 |
24 | 41656 |
25 | 52281 |
26 | 64436 |
27 | 79316 |
28 | 96151 |
29 | 116626 |
30 | 139246 |
31 | 166651 |
32 | 196751 |
33 | 232501 |
34 | 271601 |
35 | 317961 |
36 | 367616 |
37 | 426521 |
38 | 489506 |
[0,0,0,0,1,6,21,56,126,251,461,786,1281,1981,2981, 4311,6131,8436,11496,15246,20076,25851,33166, 41656,52281,64436,79316,96151,116626,139246, 166651,196751,232501,271601,317961,367616,426521, 489506] |