n | a(n) |
---|---|
1 | 4 |
2 | 22 |
3 | 94 |
4 | 364 |
5 | 1336 |
6 | 4738 |
7 | 16402 |
8 | 55768 |
9 | 186988 |
10 | 620014 |
11 | 2037190 |
12 | 6643012 |
13 | 21523360 |
14 | 69353050 |
15 | 222408058 |
16 | 710270896 |
17 | 2259952852 |
18 | 7167279046 |
19 | 22664098606 |
20 | 71479080220 |
21 | 224897593864 |
22 | 706073841202 |
23 | 2212364702434 |
24 | 6919523643784 |
25 | 21605859540796 |
26 | 67359444450718 |
[4,22,94,364,1336,4738,16402,55768,186988,620014, 2037190,6643012,21523360,69353050,222408058, 710270896,2259952852,7167279046,22664098606, 71479080220,224897593864,706073841202, 2212364702434,6919523643784,21605859540796, 67359444450718] |