A347597 a(n) = Permanent(T(2*n + 1)) where T(n) is the tangent matrix defined in A346831. Bisection of A347598 (odd indices).
0, 2, -12, 230, -6936, 316682, -20359332, 1754340590, -195242324016, 27266796955922, -4669829301365052, 962523286888757750, -235056895264868039496, 67119429827860669710362
Offset: 0