n | a(n) |
---|---|
1 | 4 |
2 | 10 |
3 | 20 |
4 | 36 |
5 | 76 |
6 | 160 |
7 | 344 |
8 | 748 |
9 | 1624 |
10 | 3544 |
11 | 7724 |
12 | 16856 |
13 | 36776 |
14 | 80252 |
15 | 175128 |
16 | 382168 |
17 | 833996 |
18 | 1819992 |
19 | 3971720 |
20 | 8667356 |
21 | 18914520 |
22 | 41276600 |
23 | 90076716 |
24 | 196571800 |
25 | 428972904 |
26 | 936135100 |
27 | 2042900376 |
28 | 4458162072 |
29 | 9728917388 |
[4,10,20,36,76,160,344,748,1624,3544,7724,16856, 36776,80252,175128,382168,833996,1819992,3971720, 8667356,18914520,41276600,90076716,196571800, 428972904,936135100,2042900376,4458162072, 9728917388] |