n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 26 |
3 | 190 |
4 | 1462 |
5 | 11584 |
6 | 93536 |
7 | 765314 |
8 | 6323270 |
9 | 52638760 |
10 | 440815036 |
11 | 3709445084 |
12 | 31340292076 |
13 | 265683004240 |
14 | 2258793820988 |
15 | 19251776923210 |
16 | 164440378882630 |
17 | 1407266585304760 |
18 | 12063701803046300 |
19 | 103571977632247076 |
[1,4,26,190,1462,11584,93536,765314,6323270, 52638760,440815036,3709445084,31340292076, 265683004240,2258793820988,19251776923210, 164440378882630,1407266585304760, 12063701803046300,103571977632247076] |