38746
domain: N
Appears in sequences
- Number of Bieberbach groups in dimension n: torsion-free crystallographic groups.at n=5A059104
- n*3^(n-1)+A081567(n).at n=8A081666
- Number of 0..n arrays x(0..8) of 9 elements with zero 5th differences.at n=34A200332
- Number of (n+1) X (1+1) 0..1 arrays with every 2 X 2 subblock having one or two 1s.at n=8A251319
- T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock having one or two 1s.at n=36A251326
- Alternating row sums of A350464.at n=7A350466