Number of (n+1)X8 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.

A204229

Number of (n+1)X8 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.

Terms

    a(0) =751689a(1) =67329896a(2) =5466340007a(3) =239090847020

External references