Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.

A235767

Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.

Terms

    a(0) =46a(1) =178a(2) =628a(3) =1948a(4) =5643a(5) =15185a(6) =39029a(7) =95779a(8) =227803a(9) =525427a(10) =1185737a(11) =2620063a(12) =5700715a(13) =12222279a(14) =25917801a(15) =54393195a(16) =113263283a(17) =234136955a(18) =481329353a(19) =984473879a(20) =2005754987a(21) =4072140479a(22) =8245166361a(23) =16654521715a(24) =33579036115

External references