n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 6 |
3 | 18 |
4 | 50 |
5 | 120 |
6 | 252 |
7 | 476 |
8 | 828 |
9 | 1350 |
10 | 2090 |
11 | 3102 |
12 | 4446 |
13 | 6188 |
14 | 8400 |
15 | 11160 |
16 | 14552 |
17 | 18666 |
18 | 23598 |
19 | 29450 |
20 | 36330 |
21 | 44352 |
22 | 53636 |
23 | 64308 |
24 | 76500 |
25 | 90350 |
26 | 106002 |
27 | 123606 |
28 | 143318 |
29 | 165300 |
30 | 189720 |
31 | 216752 |
32 | 246576 |
33 | 279378 |
34 | 315350 |
35 | 354690 |
36 | 397602 |
37 | 444296 |
[0,2,6,18,50,120,252,476,828,1350,2090,3102,4446, 6188,8400,11160,14552,18666,23598,29450,36330, 44352,53636,64308,76500,90350,106002,123606, 143318,165300,189720,216752,246576,279378,315350, 354690,397602,444296] |