n | a(n) |
---|---|
0 | 4 |
1 | 6 |
2 | 20 |
3 | 48 |
4 | 130 |
5 | 336 |
6 | 884 |
7 | 2310 |
8 | 6052 |
9 | 15840 |
10 | 41474 |
11 | 108576 |
12 | 284260 |
13 | 744198 |
14 | 1948340 |
15 | 5100816 |
16 | 13354114 |
17 | 34961520 |
18 | 91530452 |
19 | 239629830 |
20 | 627359044 |
21 | 1642447296 |
22 | 4299982850 |
23 | 11257501248 |
24 | 29472520900 |
25 | 77160061446 |
26 | 202007663444 |
27 | 528862928880 |
28 | 1384581123202 |
29 | 3624880440720 |
30 | 9490060198964 |
[4,6,20,48,130,336,884,2310,6052,15840,41474, 108576,284260,744198,1948340,5100816,13354114, 34961520,91530452,239629830,627359044,1642447296, 4299982850,11257501248,29472520900,77160061446, 202007663444,528862928880,1384581123202, 3624880440720,9490060198964] |