Number of (n+2)X(6+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 and vertically.

A254843

Number of (n+2)X(6+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 and vertically.

Terms

    a(0) =293012a(1) =645882a(2) =1102937a(3) =2339906a(4) =4446577a(5) =8565304a(6) =15676281a(7) =28139328a(8) =48596429a(9) =82388048a(10) =136361257a(11) =223504512a(12) =356863993a(13) =570593176a(14) =914443809a(15) =1491899182a(16) =2395605969a(17) =3985181976a(18) =6852332885a(19) =12324434772a(20) =21543373065

External references