n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 18 |
3 | 67 |
4 | 260 |
5 | 1029 |
6 | 4102 |
7 | 16391 |
8 | 65544 |
9 | 262153 |
10 | 1048586 |
11 | 4194315 |
12 | 16777228 |
13 | 67108877 |
14 | 268435470 |
15 | 1073741839 |
16 | 4294967312 |
17 | 17179869201 |
18 | 68719476754 |
19 | 274877906963 |
20 | 1099511627796 |
21 | 4398046511125 |
22 | 17592186044438 |
23 | 70368744177687 |
[1,5,18,67,260,1029,4102,16391,65544,262153, 1048586,4194315,16777228,67108877,268435470, 1073741839,4294967312,17179869201,68719476754, 274877906963,1099511627796,4398046511125, 17592186044438,70368744177687] |