Number of (6+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.
A258559
Number of (6+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.
Terms
- a(0) =988a(1) =2530a(2) =3980a(3) =6196a(4) =8339a(5) =10854a(6) =13833a(7) =17058a(8) =20414a(9) =23858a(10) =27446a(11) =31237a(12) =35188a(13) =39256a(14) =43497a(15) =47970a(16) =52632a(17) =57440a(18) =62450a(19) =67721a(20) =73210a(21) =78874a(22) =84769a(23) =90954a(24) =97386a(25) =104022a(26) =110918a(27) =118133a(28) =125624a(29) =133348
External references
- oeis: A258559