n | a(n) |
---|---|
2 | 1 |
3 | 7 |
4 | 37 |
5 | 178 |
6 | 823 |
7 | 3737 |
8 | 16833 |
9 | 75608 |
10 | 339610 |
11 | 1527944 |
12 | 6892210 |
13 | 31186533 |
14 | 141598200 |
15 | 645186895 |
16 | 2950261555 |
17 | 13538266219 |
18 | 62338173865 |
19 | 287993085103 |
20 | 1334712682675 |
21 | 6204513729392 |
22 | 28925212243136 |
23 | 135216169757852 |
24 | 633722949713612 |
[1,7,37,178,823,3737,16833,75608,339610,1527944, 6892210,31186533,141598200,645186895,2950261555, 13538266219,62338173865,287993085103, 1334712682675,6204513729392,28925212243136, 135216169757852,633722949713612] |