T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, diagonal and antidiagonal neighbors, without consecutive collinear links.

A220738

T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, diagonal and antidiagonal neighbors, without consecutive collinear links.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =4a(9) =1a(10) =1a(11) =13a(12) =22a(13) =8a(14) =1a(15) =1a(16) =32a(17) =103a(18) =72a(19) =16a(20) =1a(21) =1a(22) =85a(23) =487a(24) =712a(25) =258a(26) =32a(27) =1a(28) =1a(29) =221

External references