Number of (n+1) X 2 0..1 arrays with the permanents of 2 X 2 subblocks nondecreasing rightwards and downwards.
A204716
Number of (n+1) X 2 0..1 arrays with the permanents of 2 X 2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =16a(1) =51a(2) =156a(3) =450a(4) =1267a(5) =3490a(6) =9490a(7) =25545a(8) =68286a(9) =181584a(10) =481021a(11) =1270576a(12) =3348916a(13) =8812575a(14) =23161632a(15) =60817950a(16) =159583495a(17) =418515070a(18) =1097126806a(19) =2875195509a(20) =7533120066a(21) =19733485356a(22) =51685977361a(23) =135361729420a(24) =354473776312
External references
- oeis: A204716