Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock singular.
A185513
Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock singular.
Terms
- a(0) =31a(1) =143a(2) =593a(3) =2553a(4) =10847a(5) =46303a(6) =197329a(7) =841449a(8) =3587359a(9) =15295151a(10) =65211089a(11) =278030937a(12) =1185395807a(13) =5053987327a(14) =21547889233a(15) =91870352457a(16) =391693178911
External references
- oeis: A185513