n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 3 |
6 | 7 |
7 | 12 |
8 | 30 |
9 | 85 |
10 | 173 |
11 | 476 |
12 | 961 |
13 | 2652 |
14 | 8045 |
15 | 17637 |
16 | 51033 |
17 | 108950 |
18 | 312455 |
19 | 663535 |
20 | 1900470 |
21 | 5936673 |
22 | 13472296 |
23 | 39993895 |
24 | 87986917 |
25 | 257978502 |
26 | 820236724 |
27 | 1899474678 |
28 | 5723030586 |
29 | 12809477536 |
30 | 38036848410 |
31 | 84141805077 |
32 | 248369601964 |
[1,1,1,2,3,7,12,30,85,173,476,961,2652,8045,17637, 51033,108950,312455,663535,1900470,5936673, 13472296,39993895,87986917,257978502,820236724, 1899474678,5723030586,12809477536,38036848410, 84141805077,248369601964] |