n | a(n) |
---|---|
2 | 1 |
3 | 9 |
4 | 150 |
5 | 1085 |
6 | 5283 |
7 | 20495 |
8 | 69007 |
9 | 212020 |
10 | 613633 |
11 | 1708508 |
12 | 4640978 |
13 | 12414802 |
14 | 32903418 |
15 | 86731043 |
16 | 227905816 |
17 | 597838223 |
18 | 1566763325 |
19 | 4103989113 |
20 | 10747219441 |
21 | 28140274566 |
22 | 73676929931 |
23 | 192894712070 |
24 | 505012447636 |
25 | 1322149114676 |
26 | 3461442847524 |
27 | 9062189100301 |
[1,9,150,1085,5283,20495,69007,212020,613633, 1708508,4640978,12414802,32903418,86731043, 227905816,597838223,1566763325,4103989113, 10747219441,28140274566,73676929931,192894712070, 505012447636,1322149114676,3461442847524, 9062189100301] |