Half the number of (n+1)X2 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks.
A184459
Half the number of (n+1)X2 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks.
Terms
- a(0) =3a(1) =7a(2) =26a(3) =91a(4) =334a(5) =1212a(6) =4496a(7) =16809a(8) =63442a(9) =240728a(10) =918208a(11) =3516450a(12) =13515164a(13) =52099024a(14) =201356496a(15) =779967713a(16) =3027239338a(17) =11769964920a(18) =45833102224a(19) =178726147558a(20) =697817190692
External references
- oeis: A184459