Number of (n+1)X3 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.
A205021
Number of (n+1)X3 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =2338a(1) =27611a(2) =275853a(3) =3684581a(4) =56088455a(5) =888172440a(6) =14267356381a(7) =230651852383
External references
- oeis: A205021