a(n) = permanent(T(n)), where T(n) is the tangent matrix defined in A346831 and n >= 1; by convention a(0) = 1.
A347598
a(n) = permanent(T(n)), where T(n) is the tangent matrix defined in A346831 and n >= 1; by convention a(0) = 1.
Terms
- a(0) =1a(1) =0a(2) =-1a(3) =2a(4) =5a(5) =-12a(6) =-61a(7) =230a(8) =1385a(9) =-6936a(10) =-50521a(11) =316682a(12) =2702765a(13) =-20359332a(14) =-199360981a(15) =1754340590a(16) =19391512145a(17) =-195242324016
External references
- oeis: A347598