n | a(n) |
---|---|
0 | 4 |
1 | 10 |
2 | 25 |
3 | 63 |
4 | 159 |
5 | 402 |
6 | 1017 |
7 | 2573 |
8 | 6510 |
9 | 16472 |
10 | 41679 |
11 | 105461 |
12 | 266850 |
13 | 675216 |
14 | 1708513 |
15 | 4323086 |
16 | 10938795 |
17 | 27678662 |
18 | 70035898 |
19 | 177213300 |
20 | 448406526 |
21 | 1134612428 |
22 | 2870933600 |
23 | 7264383443 |
24 | 18381221638 |
25 | 46510390257 |
26 | 117686215012 |
27 | 297783895756 |
28 | 753488830979 |
[4,10,25,63,159,402,1017,2573,6510,16472,41679, 105461,266850,675216,1708513,4323086,10938795, 27678662,70035898,177213300,448406526,1134612428, 2870933600,7264383443,18381221638,46510390257, 117686215012,297783895756,753488830979] |