Number of (n+1) X (1+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors.

A239171

Number of (n+1) X (1+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors.

Terms

    a(0) =6a(1) =12a(2) =36a(3) =96a(4) =264a(5) =720a(6) =1968a(7) =5376a(8) =14688a(9) =40128a(10) =109632a(11) =299520a(12) =818304a(13) =2235648a(14) =6107904a(15) =16687104a(16) =45590016a(17) =124554240a(18) =340288512a(19) =929685504a(20) =2539948032a(21) =6939267072a(22) =18958430208a(23) =51795394560a(24) =141507649536a(25) =386606088192

External references