n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 22 |
3 | 131 |
4 | 807 |
5 | 5066 |
6 | 32188 |
7 | 206242 |
8 | 1329733 |
9 | 8614685 |
10 | 56024538 |
11 | 365491218 |
12 | 2390613557 |
13 | 15671221522 |
14 | 102925324569 |
15 | 677110860689 |
16 | 4460956827127 |
17 | 29427611146335 |
18 | 194348311824025 |
19 | 1284856925961827 |
20 | 8502252246841668 |
21 | 56309476194587377 |
22 | 373220349572126265 |
[1,4,22,131,807,5066,32188,206242,1329733,8614685, 56024538,365491218,2390613557,15671221522, 102925324569,677110860689,4460956827127, 29427611146335,194348311824025,1284856925961827, 8502252246841668,56309476194587377, 373220349572126265] |