Number of n X 4 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

A201273

Number of n X 4 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Terms

    a(0) =1a(1) =3a(2) =12a(3) =14a(4) =85a(5) =199a(6) =143a(7) =740a(8) =1274a(9) =759a(10) =3416a(11) =5312a(12) =2746a(13) =11628a(14) =16676a(15) =7946a(16) =32164a(17) =43438a(18) =19713a(19) =76321a(20) =99347a(21) =43137a(22) =162566a(23) =205231a(24) =86351a(25) =318364a(26) =391600a(27) =161089a(28) =581578a(29) =702330

External references