Number of nX2 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.

A201149

Number of nX2 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.

Terms

    a(0) =6a(1) =20a(2) =56a(3) =140a(4) =330a(5) =745a(6) =1634a(7) =3504a(8) =7388a(9) =15366a(10) =31612a(11) =64446a(12) =130391a(13) =262113a(14) =523984a(15) =1042433a(16) =2065098a(17) =4075761a(18) =8017395a(19) =15724110a(20) =30756544a(21) =60014931a(22) =116849951a(23) =227054267a(24) =440389499a(25) =852738289a(26) =1648633351a(27) =3182830233

External references