Number of (2+1) X (n+1) 0..1 arrays with no 2 X 2 subblock having x11-x00 less than x10-x01.

A251269

Number of (2+1) X (n+1) 0..1 arrays with no 2 X 2 subblock having x11-x00 less than x10-x01.

Terms

    a(0) =35a(1) =114a(2) =313a(3) =772a(4) =1775a(5) =3894a(6) =8277a(7) =17224a(8) =35339a(9) =71834a(10) =145137a(11) =292108a(12) =586471a(13) =1175678a(14) =2354637a(15) =4713168a(16) =9430915a(17) =18867170a(18) =37740521a(19) =75488148a(20) =150984415a(21) =301978054a(22) =603966533a(23) =1207944792a(24) =2415902715a(25) =4831820074a(26) =9663656417

External references