Number of n X 3 0..2 arrays with rows, antidiagonals and columns unimodal.

A223720

Number of n X 3 0..2 arrays with rows, antidiagonals and columns unimodal.

Terms

    a(0) =22a(1) =484a(2) =5883a(3) =46613a(4) =273562a(5) =1285547a(6) =5087912a(7) =17557701a(8) =54161878a(9) =152154419a(10) =394849354a(11) =957192985a(12) =2187192034a(13) =4745347460a(14) =9834757897a(15) =19568773673a(16) =37541913638a(17) =69694254022a(18) =125590862829a(19) =220277446621a(20) =376922731034

External references