Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.

A265167

Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =21a(4) =186a(5) =2113a(6) =27856a(7) =422481a(8) =7241480a(9) =138478561a(10) =2923183474a(11) =67520866405

External references