Number of nX2 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

A201210

Number of nX2 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Terms

    a(0) =10a(1) =50a(2) =216a(3) =867a(4) =3318a(5) =12314a(6) =44858a(7) =161257a(8) =574237a(9) =2029778a(10) =7132780a(11) =24943546a(12) =86875164a(13) =301535122a(14) =1043529630a(15) =3602228998a(16) =12407419230a(17) =42653320657a(18) =146380696477a(19) =501599529832

External references