n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 38 |
4 | 340 |
5 | 1630 |
6 | 5552 |
7 | 15210 |
8 | 35828 |
9 | 75530 |
10 | 146240 |
11 | 264702 |
12 | 453620 |
13 | 742918 |
14 | 1171120 |
15 | 1786850 |
16 | 2650452 |
17 | 3835730 |
18 | 5431808 |
19 | 7545110 |
20 | 10301460 |
21 | 13848302 |
22 | 18357040 |
23 | 24025498 |
24 | 31080500 |
25 | 39780570 |
26 | 50418752 |
27 | 63325550 |
28 | 78871988 |
29 | 97472790 |
30 | 119589680 |
31 | 145734802 |
[0,0,38,340,1630,5552,15210,35828,75530,146240, 264702,453620,742918,1171120,1786850,2650452, 3835730,5431808,7545110,10301460,13848302, 18357040,24025498,31080500,39780570,50418752, 63325550,78871988,97472790,119589680,145734802] |