Number of (n+1)X(1+1) arrays of permutations of 0..n*1-1 with each element moved a city block distance of exactly 2.

A263385

Number of (n+1)X(1+1) arrays of permutations of 0..n*1-1 with each element moved a city block distance of exactly 2.

Terms

    a(0) =1a(1) =4a(2) =16a(3) =36a(4) =169a(5) =576a(6) =2025a(7) =7056a(8) =25600a(9) =90000a(10) =319225a(11) =1132096a(12) =4020025a(13) =14243076a(14) =50523664a(15) =179184996a(16) =635493681a(17) =2253590784a(18) =7992538801a(19) =28345089600a(20) =100524507136a(21) =356504526400

External references