Number of (n+1)X3 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.
A205929
Number of (n+1)X3 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =3036a(1) =95888a(2) =2554260a(3) =61330824a(4) =1380479280a(5) =29707151720a(6) =618727630440
External references
- oeis: A205929