n | a(n) |
---|---|
1 | 4 |
2 | 8 |
3 | 14 |
4 | 24 |
5 | 42 |
6 | 76 |
7 | 138 |
8 | 254 |
9 | 470 |
10 | 876 |
11 | 1638 |
12 | 3070 |
13 | 5766 |
14 | 10850 |
15 | 20436 |
16 | 38550 |
17 | 72806 |
18 | 137670 |
19 | 260612 |
20 | 493824 |
21 | 936690 |
22 | 1778360 |
23 | 3379372 |
24 | 6427190 |
25 | 12232928 |
26 | 23300652 |
27 | 44414366 |
28 | 84713872 |
29 | 161686324 |
30 | 308780220 |
[4,8,14,24,42,76,138,254,470,876,1638,3070,5766, 10850,20436,38550,72806,137670,260612,493824, 936690,1778360,3379372,6427190,12232928,23300652, 44414366,84713872,161686324,308780220] |