5619456

Appears in sequences

• Permanent of n X n matrix M with M(i,j) = (i+j) (mod 3).at n=9A204265
• Permanent of the n-th principal submatrix of A204427.at n=9A204428
• Permanent of the n-th principal submatrix of A204431.at n=9A204432
• E.g.f. satisfies: A'(x) = 1 + 4*A(x) + A(x)^2, where A(0)=0.at n=8A234854