n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 28 |
3 | 351 |
4 | 2016 |
5 | 7750 |
6 | 23220 |
7 | 58653 |
8 | 130816 |
9 | 265356 |
10 | 499500 |
11 | 885115 |
12 | 1492128 |
13 | 2412306 |
14 | 3763396 |
15 | 5693625 |
16 | 8386560 |
17 | 12066328 |
18 | 17003196 |
19 | 23519511 |
20 | 31996000 |
21 | 42878430 |
22 | 56684628 |
23 | 74011861 |
24 | 95544576 |
25 | 122062500 |
26 | 154449100 |
27 | 193700403 |
28 | 240934176 |
29 | 297399466 |
30 | 364486500 |
[0,0,28,351,2016,7750,23220,58653,130816,265356, 499500,885115,1492128,2412306,3763396,5693625, 8386560,12066328,17003196,23519511,31996000, 42878430,56684628,74011861,95544576,122062500, 154449100,193700403,240934176,297399466,364486500] |