Number of (4+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.

A255759

Number of (4+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) =30182a(1) =46367a(2) =71651a(3) =118925a(4) =203503a(5) =371616a(6) =619142a(7) =1072628a(8) =1797116a(9) =2967765a(10) =5071867a(11) =8405698a(12) =14522330a(13) =23891246a(14) =44755522a(15) =79091985a(16) =151022450a(17) =262118115a(18) =546460339a(19) =1023817596a(20) =2086472417a(21) =3735441860a(22) =8131658798a(23) =15548790150

External references