n | a(n) |
---|---|
1 | 4 |
2 | 4 |
3 | 8 |
4 | 38 |
5 | 90 |
6 | 305 |
7 | 902 |
8 | 2710 |
9 | 8376 |
10 | 25226 |
11 | 77145 |
12 | 235122 |
13 | 715882 |
14 | 2186483 |
15 | 6666846 |
16 | 20353268 |
17 | 62140942 |
18 | 189739429 |
19 | 579567532 |
20 | 1770391431 |
21 | 5409031357 |
22 | 16528102350 |
23 | 50508922108 |
24 | 154369025240 |
25 | 471828803722 |
26 | 1442250315610 |
27 | 4408832591287 |
[4,4,8,38,90,305,902,2710,8376,25226,77145,235122, 715882,2186483,6666846,20353268,62140942, 189739429,579567532,1770391431,5409031357, 16528102350,50508922108,154369025240,471828803722, 1442250315610,4408832591287] |