n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 18 |
4 | 94 |
5 | 611 |
6 | 4381 |
7 | 35834 |
8 | 326662 |
9 | 3301193 |
10 | 36611767 |
11 | 442379438 |
12 | 5784595282 |
13 | 81393560783 |
14 | 1226280162097 |
15 | 19696507698878 |
16 | 335990910075202 |
17 | 6066382761193373 |
18 | 115578717461844067 |
19 | 2317323290060066858 |
[0,1,3,18,94,611,4381,35834,326662,3301193, 36611767,442379438,5784595282,81393560783, 1226280162097,19696507698878,335990910075202, 6066382761193373,115578717461844067, 2317323290060066858] |