n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 3 |
4 | 4 |
5 | 7 |
6 | 9 |
7 | 37 |
8 | 44 |
9 | 122 |
10 | 360 |
11 | 837 |
12 | 1955 |
13 | 11063 |
14 | 21562 |
15 | 102402 |
16 | 455597 |
17 | 1800255 |
18 | 6701316 |
19 | 61868659 |
20 | 193623470 |
21 | 1467251281 |
22 | 10855933316 |
23 | 68253791333 |
24 | 417351118269 |
25 | 6197640479557 |
26 | 31389717866283 |
27 | 387573069042758 |
[1,2,2,3,4,7,9,37,44,122,360,837,1955,11063,21562, 102402,455597,1800255,6701316,61868659,193623470, 1467251281,10855933316,68253791333,417351118269, 6197640479557,31389717866283,387573069042758] |