Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.
A235542
Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =48a(1) =222a(2) =1049a(3) =4348a(4) =17658a(5) =67012a(6) =247639a(7) =880814a(8) =3061429a(9) =10385988a(10) =34604232a(11) =113376954a(12) =366386257a(13) =1169544994a(14) =3694214596a(15) =11560700652a(16) =35884753502a(17) =110586677426a(18) =338628074707
External references
- oeis: A235542