n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 51 |
5 | 370 |
6 | 3691 |
7 | 48525 |
8 | 812089 |
9 | 16832928 |
10 | 422860609 |
11 | 12649706416 |
12 | 444120983433 |
13 | 18078156682309 |
14 | 844323149201499 |
15 | 44838127594166770 |
16 | 2686250544297734323 |
17 | 180295858504407010026 |
18 | 13473490672899749784979 |
19 | 1114874245392058455432873 |
[1,1,3,10,51,370,3691,48525,812089,16832928, 422860609,12649706416,444120983433,18078156682309, 844323149201499,44838127594166770, 2686250544297734323,180295858504407010026, 13473490672899749784979,1114874245392058455432873] |