n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 16 |
4 | 42 |
5 | 106 |
6 | 267 |
7 | 656 |
8 | 1602 |
9 | 3868 |
10 | 9270 |
11 | 22048 |
12 | 52140 |
13 | 122580 |
14 | 286798 |
15 | 667944 |
16 | 1549259 |
17 | 3579738 |
18 | 8242638 |
19 | 18917600 |
20 | 43286909 |
21 | 98768820 |
22 | 224768425 |
23 | 510235760 |
24 | 1155553468 |
25 | 2611251662 |
26 | 5888421059 |
27 | 13252176464 |
28 | 29768501556 |
29 | 66749440076 |
30 | 149415504274 |
[1,2,6,16,42,106,267,656,1602,3868,9270,22048, 52140,122580,286798,667944,1549259,3579738, 8242638,18917600,43286909,98768820,224768425, 510235760,1155553468,2611251662,5888421059, 13252176464,29768501556,66749440076,149415504274] |