Number of nX3 0..3 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.
A201831
Number of nX3 0..3 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.
Terms
- a(0) =23a(1) =212a(2) =1629a(3) =11180a(4) =71501a(5) =434721a(6) =2553223a(7) =14601638a(8) =81799885a(9) =450682446a(10) =2449953613a(11) =13173208338a(12) =70201196318a(13) =371356326457
External references
- oeis: A201831