n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 23 |
4 | 214 |
5 | 2698 |
6 | 44288 |
7 | 902962 |
8 | 22262244 |
9 | 648446612 |
10 | 21940389584 |
11 | 849992734124 |
12 | 37273085398456 |
13 | 1831837147680872 |
14 | 100066601315825216 |
15 | 6031974947471801512 |
16 | 398733149802770699792 |
17 | 28744536471179273843088 |
18 | 2248840133521868856571456 |
19 | 190105368229118222009348848 |
[1,4,23,214,2698,44288,902962,22262244,648446612, 21940389584,849992734124,37273085398456, 1831837147680872,100066601315825216, 6031974947471801512,398733149802770699792, 28744536471179273843088,2248840133521868856571456, 190105368229118222009348848] |