Number of (n+1)X5 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero.
A205231
Number of (n+1)X5 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero.
Terms
- a(0) =4584a(1) =221766a(2) =12273323a(3) =586841773a(4) =26740726836
External references
- oeis: A205231