n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 4 |
4 | 6 |
5 | 25 |
6 | 68 |
7 | 112 |
8 | 281 |
9 | 856 |
10 | 1674 |
11 | 3988 |
12 | 10508 |
13 | 23724 |
14 | 55897 |
15 | 136144 |
16 | 325584 |
17 | 765361 |
18 | 1829400 |
19 | 4401652 |
20 | 10407276 |
21 | 24816024 |
22 | 59395330 |
23 | 141247593 |
24 | 336608388 |
25 | 803177056 |
26 | 1914674361 |
27 | 4562063424 |
28 | 10876904302 |
29 | 25937972164 |
30 | 61813285608 |
[0,4,4,6,25,68,112,281,856,1674,3988,10508,23724, 55897,136144,325584,765361,1829400,4401652, 10407276,24816024,59395330,141247593,336608388, 803177056,1914674361,4562063424,10876904302, 25937972164,61813285608] |