n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 73 |
6 | 267 |
7 | 1022 |
8 | 4041 |
9 | 16303 |
10 | 66951 |
11 | 279275 |
12 | 1180486 |
13 | 5043381 |
14 | 21742492 |
15 | 94484328 |
16 | 413498117 |
17 | 1820760068 |
18 | 8060811170 |
19 | 35859891401 |
20 | 160225912174 |
21 | 718718698186 |
22 | 3235377214256 |
23 | 14611428489991 |
24 | 66182167582839 |
25 | 300581687682479 |
26 | 1368556033741457 |
27 | 6245359601314856 |
28 | 28560955419335974 |
[1,1,2,6,21,73,267,1022,4041,16303,66951,279275, 1180486,5043381,21742492,94484328,413498117, 1820760068,8060811170,35859891401,160225912174, 718718698186,3235377214256,14611428489991, 66182167582839,300581687682479,1368556033741457, 6245359601314856,28560955419335974] |