Number of (n+2)X9 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.

A186838

Number of (n+2)X9 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.

Terms

    a(0) =6229504a(1) =188814612a(2) =5699887192a(3) =156721188699

External references