T(n,k) = Number of n X k array permutations with each element moved by a city block distance of one.

A189245

T(n,k) = Number of n X k array permutations with each element moved by a city block distance of one.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =0a(4) =4a(5) =0a(6) =1a(7) =9a(8) =9a(9) =1a(10) =0a(11) =25a(12) =0a(13) =25a(14) =0a(15) =1a(16) =64a(17) =121a(18) =121a(19) =64a(20) =1a(21) =0a(22) =169a(23) =0a(24) =1296a(25) =0a(26) =169a(27) =0a(28) =1a(29) =441

External references