Number of (n+1) X (2+1) 0..1 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A253344
Number of (n+1) X (2+1) 0..1 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =47a(1) =173a(2) =735a(3) =3192a(4) =13917a(5) =60779a(6) =265605a(7) =1161035a(8) =5075841a(9) =22191959a(10) =97027389a(11) =424226867a(12) =1854830841a(13) =8109825551a(14) =35458405365a(15) =155034056747a(16) =677852377137
External references
- oeis: A253344