-20359332

Appears in sequences

• a(n) = Permanent(T(2*n + 1)) where T(n) is the tangent matrix defined in A346831. Bisection of A347598 (odd indices).at n=6A347597
• a(n) = permanent(T(n)), where T(n) is the tangent matrix defined in A346831 and n >= 1; by convention a(0) = 1.at n=13A347598