Number of (5+1) X (n+1) 0..1 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.
A250802
Number of (5+1) X (n+1) 0..1 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) =338a(1) =1336a(2) =4258a(3) =12062a(4) =31220a(5) =76110a(6) =177142a(7) =398704a(8) =874298a(9) =1879862a(10) =3980276a(11) =8328038a(12) =17263070a(13) =35523840a(14) =72679858a(15) =148022462a(16) =300378084a(17) =607796942a(18) =1227019286a(19) =2472564224a(20) =4975146938a(21) =9998914966a(22) =20076555908a(23) =40280556422
External references
- oeis: A250802