Number of (n+1)X(1+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.
A235527
Number of (n+1)X(1+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =81a(1) =498a(2) =2996a(3) =15782a(4) =80584a(5) =388008a(6) =1819537a(7) =8271237a(8) =36871545a(9) =161304512a(10) =695920632a(11) =2965654390a(12) =12514374020a(13) =52363323354a(14) =217577519113a(15) =898716211257
External references
- oeis: A235527