Number of (n+1) X 2 binary arrays with every 2 X 2 subblock sum equal to some horizontal or vertical neighbor 2 X 2 subblock sum.
A185489
Number of (n+1) X 2 binary arrays with every 2 X 2 subblock sum equal to some horizontal or vertical neighbor 2 X 2 subblock sum.
Terms
- a(0) =0a(1) =24a(2) =36a(3) =160a(4) =380a(5) =1332a(6) =3616a(7) =11828a(8) =33764a(9) =107240a(10) =314028a(11) =980996a(12) =2915008a(13) =9013892a(14) =27021076a(15) =83023720a(16) =250222428a(17) =765753844a(18) =2315518240a(19) =7068457300a(20) =21417487492a(21) =65277991272a(22) =198042102732a(23) =603022088996
External references
- oeis: A185489