n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 11 |
5 | 32 |
6 | 116 |
7 | 455 |
8 | 1993 |
9 | 9134 |
10 | 43580 |
11 | 211659 |
12 | 1041441 |
13 | 5156642 |
14 | 25640456 |
15 | 127773475 |
16 | 637624313 |
17 | 3184387574 |
18 | 15910947980 |
19 | 79521737939 |
20 | 397510726681 |
21 | 1987259550002 |
22 | 9935420646296 |
23 | 49674470817195 |
24 | 248364482308833 |
25 | 1241798790172214 |
[1,1,2,4,11,32,116,455,1993,9134,43580,211659, 1041441,5156642,25640456,127773475,637624313, 3184387574,15910947980,79521737939,397510726681, 1987259550002,9935420646296,49674470817195, 248364482308833,1241798790172214] |