n | a(n) |
---|---|
4 | 1 |
5 | 3 |
6 | 12 |
7 | 34 |
8 | 103 |
9 | 281 |
10 | 778 |
11 | 2072 |
12 | 5524 |
13 | 14488 |
14 | 37918 |
15 | 98474 |
16 | 255137 |
17 | 658351 |
18 | 1695542 |
19 | 4356520 |
20 | 11177720 |
21 | 28637452 |
22 | 73294698 |
23 | 187412326 |
24 | 478861373 |
25 | 1222765699 |
26 | 3120722598 |
27 | 7961152560 |
28 | 20302100415 |
29 | 51757554237 |
[1,3,12,34,103,281,778,2072,5524,14488,37918, 98474,255137,658351,1695542,4356520,11177720, 28637452,73294698,187412326,478861373,1222765699, 3120722598,7961152560,20302100415,51757554237] |