Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
A235730
Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
Terms
- a(0) =58a(1) =380a(2) =2481a(3) =15963a(4) =102683a(5) =659235a(6) =4232565a(7) =27168327a(8) =174393813a(9) =1119403274a(10) =7185285384a(11) =46121125726a(12) =296043902819
External references
- oeis: A235730