n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 11 |
3 | 26 |
4 | 52 |
5 | 109 |
6 | 237 |
7 | 556 |
8 | 1405 |
9 | 3690 |
10 | 10085 |
11 | 28157 |
12 | 80071 |
13 | 230568 |
14 | 670122 |
15 | 1962690 |
16 | 5782468 |
17 | 17124206 |
18 | 50930440 |
19 | 152043592 |
20 | 455389240 |
21 | 1367883344 |
22 | 4119448337 |
23 | 12434731102 |
24 | 37613760490 |
25 | 113995567275 |
26 | 346090346047 |
27 | 1052421430209 |
[1,4,11,26,52,109,237,556,1405,3690,10085,28157, 80071,230568,670122,1962690,5782468,17124206, 50930440,152043592,455389240,1367883344, 4119448337,12434731102,37613760490,113995567275, 346090346047,1052421430209] |