n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 19 |
4 | 112 |
5 | 801 |
6 | 6756 |
7 | 65563 |
8 | 717760 |
9 | 8729857 |
10 | 116570980 |
11 | 1693096131 |
12 | 26548383984 |
13 | 446689827169 |
14 | 8023582921732 |
15 | 153192673528651 |
16 | 3097301219335936 |
17 | 66095983547942913 |
18 | 1484384376886189380 |
19 | 34991710162280602867 |
20 | 863797053818651591920 |
21 | 22282392569877969167521 |
[0,1,4,19,112,801,6756,65563,717760,8729857, 116570980,1693096131,26548383984,446689827169, 8023582921732,153192673528651,3097301219335936, 66095983547942913,1484384376886189380, 34991710162280602867,863797053818651591920, 22282392569877969167521] |