Number of (n+1) X (1+1) 0..1 arrays with the difference of the upper and lower median value of each 2 X 2 subblock in lexicographically nondecreasing order rowwise and columnwise.
A235566
Number of (n+1) X (1+1) 0..1 arrays with the difference of the upper and lower median value of each 2 X 2 subblock in lexicographically nondecreasing order rowwise and columnwise.
Terms
- a(0) =16a(1) =50a(2) =144a(3) =398a(4) =1076a(5) =2866a(6) =7560a(7) =19798a(8) =51580a(9) =133850a(10) =346320a(11) =894014a(12) =2303876a(13) =5929090a(14) =15242904a(15) =39155878a(16) =100520716a(17) =257930666a(18) =661586400a(19) =1696454798a(20) =4349091860a(21) =11147493970a(22) =28569027240a(23) =73209334774a(24) =187586107036
External references
- oeis: A235566