n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 3 |
7 | 12 |
8 | 30 |
9 | 60 |
10 | 121 |
11 | 217 |
12 | 385 |
13 | 700 |
14 | 1260 |
15 | 2521 |
16 | 4960 |
17 | 9460 |
18 | 20020 |
19 | 38500 |
20 | 71071 |
21 | 148161 |
22 | 276549 |
23 | 503685 |
24 | 1071525 |
25 | 2006508 |
26 | 3681588 |
27 | 8013256 |
28 | 14981556 |
29 | 27412041 |
30 | 60042147 |
31 | 111406614 |
32 | 202871284 |
33 | 447617884 |
34 | 828004144 |
[0,0,0,0,1,3,12,30,60,121,217,385,700,1260,2521, 4960,9460,20020,38500,71071,148161,276549,503685, 1071525,2006508,3681588,8013256,14981556,27412041, 60042147,111406614,202871284,447617884,828004144] |