n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 130 |
5 | 1912 |
6 | 34715 |
7 | 743217 |
8 | 18255118 |
9 | 505070221 |
10 | 15532353184 |
11 | 525533183871 |
12 | 19403298048040 |
13 | 776437898905606 |
14 | 33479679336072541 |
15 | 1547841068340501230 |
16 | 76390272348430998076 |
17 | 4008960603544297652028 |
18 | 222949077434693015546579 |
19 | 13098226217965693342007714 |
20 | 810657425687536689904281842 |
[1,1,2,12,130,1912,34715,743217,18255118, 505070221,15532353184,525533183871,19403298048040, 776437898905606,33479679336072541, 1547841068340501230,76390272348430998076, 4008960603544297652028,222949077434693015546579, 13098226217965693342007714, 810657425687536689904281842] |