n | a(n) |
---|---|
0 | 0 |
1 | 4 |
2 | 25 |
3 | 98 |
4 | 386 |
5 | 1402 |
6 | 4938 |
7 | 16936 |
8 | 57020 |
9 | 189172 |
10 | 620397 |
11 | 2015456 |
12 | 6496391 |
13 | 20801576 |
14 | 66231279 |
15 | 209847980 |
16 | 662049349 |
17 | 2080850248 |
18 | 6518383898 |
19 | 20358327362 |
20 | 63413001935 |
21 | 197042859318 |
22 | 610922240964 |
23 | 1890331512546 |
24 | 5838350817615 |
25 | 18001432735438 |
26 | 55417333344241 |
[0,4,25,98,386,1402,4938,16936,57020,189172, 620397,2015456,6496391,20801576,66231279, 209847980,662049349,2080850248,6518383898, 20358327362,63413001935,197042859318,610922240964, 1890331512546,5838350817615,18001432735438, 55417333344241] |