n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 10 |
3 | 20 |
4 | 36 |
5 | 64 |
6 | 120 |
7 | 240 |
8 | 497 |
9 | 1036 |
10 | 2158 |
11 | 4524 |
12 | 9625 |
13 | 20816 |
14 | 45560 |
15 | 100368 |
16 | 221915 |
17 | 492380 |
18 | 1097302 |
19 | 2457228 |
20 | 5526666 |
21 | 12474000 |
22 | 28233600 |
23 | 64061920 |
24 | 145704327 |
25 | 332174532 |
26 | 758977386 |
27 | 1737703780 |
28 | 3985847284 |
29 | 9157908736 |
30 | 21074460512 |
31 | 48569746368 |
32 | 112096071675 |
[1,4,10,20,36,64,120,240,497,1036,2158,4524,9625, 20816,45560,100368,221915,492380,1097302,2457228, 5526666,12474000,28233600,64061920,145704327, 332174532,758977386,1737703780,3985847284, 9157908736,21074460512,48569746368,112096071675] |