Number of (n+1)X5 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero.
A204736
Number of (n+1)X5 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero.
Terms
- a(0) =63a(1) =304a(2) =1389a(3) =6176a(4) =26680a(5) =113694a(6) =476919a(7) =1988919a(8) =8234596a(9) =34021482a(10) =140153550a(11) =577020406a(12) =2373119682a(13) =9758784830a(14) =40115635266a(15) =164904149636a(16) =677790994154
External references
- oeis: A204736