Number of (n+1)X3 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero.
A205229
Number of (n+1)X3 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero.
Terms
- a(0) =266a(1) =2773a(2) =27157a(3) =221766a(4) =1707082a(5) =11675764a(6) =76088840a(7) =460518847a(8) =2683735998a(9) =14905311330a(10) =80378339143a(11) =419363315736
External references
- oeis: A205229