n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 25 |
3 | 106 |
4 | 449 |
5 | 1902 |
6 | 8057 |
7 | 34130 |
8 | 144577 |
9 | 612438 |
10 | 2594329 |
11 | 10989754 |
12 | 46553345 |
13 | 197203134 |
14 | 835365881 |
15 | 3538666658 |
16 | 14990032513 |
17 | 63498796710 |
18 | 268985219353 |
19 | 1139439674122 |
20 | 4826743915841 |
21 | 20446415337486 |
22 | 86612405265785 |
23 | 366896036400626 |
24 | 1554196550868289 |
[1,6,25,106,449,1902,8057,34130,144577,612438, 2594329,10989754,46553345,197203134,835365881, 3538666658,14990032513,63498796710,268985219353, 1139439674122,4826743915841,20446415337486, 86612405265785,366896036400626,1554196550868289] |