Number of non-attacking configurations on a diamond of size n, where a prince attacks the four adjacent non-diagonal squares.

A054867

Number of non-attacking configurations on a diamond of size n, where a prince attacks the four adjacent non-diagonal squares.

Terms

    a(0) =1a(1) =2a(2) =17a(3) =689a(4) =139344a(5) =142999897a(6) =748437606081

External references