Number of n X 4 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

A223834

Number of n X 4 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

Terms

    a(0) =11a(1) =46a(2) =118a(3) =249a(4) =471a(5) =824a(6) =1356a(7) =2123a(8) =3189a(9) =4626a(10) =6514a(11) =8941a(12) =12003a(13) =15804a(14) =20456a(15) =26079a(16) =32801a(17) =40758a(18) =50094a(19) =60961a(20) =73519a(21) =87936a(22) =104388a(23) =123059a(24) =144141a(25) =167834a(26) =194346a(27) =223893a(28) =256699a(29) =292996

External references