n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 17 |
5 | 141 |
6 | 1297 |
7 | 17683 |
8 | 262145 |
9 | 4861405 |
10 | 100112001 |
11 | 2371816701 |
12 | 61917364225 |
13 | 1796326510993 |
14 | 56693912375297 |
15 | 1947734359001551 |
16 | 72059082110369793 |
17 | 2863257607266475419 |
18 | 121439531096594251777 |
19 | 5480987217944109919765 |
20 | 262144000000000000000001 |
[1,1,1,4,17,141,1297,17683,262145,4861405, 100112001,2371816701,61917364225,1796326510993, 56693912375297,1947734359001551,72059082110369793, 2863257607266475419,121439531096594251777, 5480987217944109919765,262144000000000000000001] |