Number of (n+1)X(2+1) 0..2 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
A250988
Number of (n+1)X(2+1) 0..2 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.
Terms
- a(0) =169a(1) =872a(2) =4111a(3) =18387a(4) =80133a(5) =344135a(6) =1466191a(7) =6219851a(8) =26329263a(9) =111352239a(10) =470824467a(11) =1991012259a(12) =8422006891a(13) =35637583483a(14) =150851830807a(15) =638746833775
External references
- oeis: A250988