Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A255758
Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =8776a(1) =20730a(2) =51064a(3) =111064a(4) =197284a(5) =341801a(6) =551068a(7) =880000a(8) =1327924a(9) =1998692a(10) =2971672a(11) =4392340a(12) =6337544a(13) =9143648a(14) =13228340a(15) =19227692a(16) =27421084a(17) =39340572a(18) =56929636a(19) =83008296a(20) =118940192a(21) =171589464a(22) =250432040a(23) =368083568a(24) =531423924
External references
- oeis: A255758