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

A224258

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

Terms

    a(0) =46a(1) =548a(2) =3096a(3) =12467a(4) =41012a(5) =116692a(6) =296646a(7) =688533a(8) =1482310a(9) =2995516a(10) =5735542a(11) =10482777a(12) =18398930a(13) =31165238a(14) =51155680a(15) =81650727a(16) =127097568a(17) =193423162a(18) =288406876a(19) =422119879a(20) =607438872a(21) =860642144a(22) =1202096354a(23) =1657042849a(24) =2256492738a(25) =3038240352a(26) =4048005130a(27) =5340712381

External references