n | a(n) |
---|---|
0 | 4 |
1 | 15 |
2 | 60 |
3 | 239 |
4 | 952 |
5 | 3792 |
6 | 15104 |
7 | 60161 |
8 | 239628 |
9 | 954465 |
10 | 3801740 |
11 | 15142752 |
12 | 60315260 |
13 | 240242367 |
14 | 956911980 |
15 | 3811486495 |
16 | 15181573232 |
17 | 60469889136 |
18 | 240858271816 |
19 | 959365196977 |
20 | 3821257929948 |
21 | 15220493940369 |
22 | 60624914631700 |
23 | 241475755550400 |
24 | 961824703141876 |
[4,15,60,239,952,3792,15104,60161,239628,954465, 3801740,15142752,60315260,240242367,956911980, 3811486495,15181573232,60469889136,240858271816, 959365196977,3821257929948,15220493940369, 60624914631700,241475755550400,961824703141876] |