n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 22 |
3 | 142 |
4 | 1048 |
5 | 8704 |
6 | 80386 |
7 | 817786 |
8 | 9093340 |
9 | 109794556 |
10 | 1431360958 |
11 | 20047830262 |
12 | 300343272952 |
13 | 4793871035416 |
14 | 81232799446906 |
15 | 1456671526257106 |
16 | 27562347560513524 |
17 | 548844246683051860 |
18 | 11474015910364016086 |
[1,4,22,142,1048,8704,80386,817786,9093340, 109794556,1431360958,20047830262,300343272952, 4793871035416,81232799446906,1456671526257106, 27562347560513524,548844246683051860, 11474015910364016086] |