7020392

Appears in sequences

• Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=7A235194
• a(n) is the number of permutations of length n that avoid the pattern 321 and the mesh pattern (12, 363) or the same sequence for the mesh patterns (12, 399), (12, 429), (12, 483).at n=15A289598