n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 18 |
4 | 91 |
5 | 574 |
6 | 4199 |
7 | 34650 |
8 | 318645 |
9 | 3237034 |
10 | 36041657 |
11 | 436713506 |
12 | 5722676895 |
13 | 80654047942 |
14 | 1216703923147 |
15 | 19562850695690 |
16 | 333991034593833 |
17 | 6034449711055890 |
18 | 115036771019660269 |
19 | 2307582082535387570 |
20 | 48588759062255598563 |
21 | 1071533741191907032590 |
[1,2,5,18,91,574,4199,34650,318645,3237034, 36041657,436713506,5722676895,80654047942, 1216703923147,19562850695690,333991034593833, 6034449711055890,115036771019660269, 2307582082535387570,48588759062255598563, 1071533741191907032590] |