Number of (n+1) X 2 0..2 arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.

A184073

Number of (n+1) X 2 0..2 arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.

Terms

    a(0) =29a(1) =58a(2) =150a(3) =335a(4) =728a(5) =1499a(6) =2968a(7) =5645a(8) =10331a(9) =18242a(10) =31173a(11) =51709a(12) =83492a(13) =131554a(14) =202727a(15) =306142a(16) =453830a(17) =661439a(18) =949082a(19) =1342332a(20) =1873381a(21) =2582381a(22) =3518986a(23) =4744115a(24) =6331957a(25) =8372240a(26) =10972787a(27) =14262383a(28) =18393978a(29) =23548252

External references