Number of 4 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

A224002

Number of 4 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

Terms

    a(0) =81a(1) =793a(2) =2980a(3) =7927a(4) =17929a(5) =36845a(6) =71061a(7) =130767a(8) =231730a(9) =397675a(10) =663404a(11) =1078800a(12) =1713877a(13) =2665051a(14) =4062821a(15) =6081063a(16) =8948154a(17) =12960157a(18) =18496312a(19) =26037092a(20) =36185097a(21) =49689073a(22) =67471357a(23) =90659063a(24) =120619338a(25) =158999031a(26) =207769132

External references