Maximum number of odd 2 X 2 submatrices over all 2n X 2n (0,1) matrices.

Terms

a(0) =1a(1) =24a(2) =129a(3) =448a(4) =1105a(5) =2376a(6) =4417a(7) =7680a(8) =12321a(9) =19000a(10) =27841a(11) =39744a(12) =54769a(13) =74088a(14) =97665a(15) =126976a(16) =161857a(17) =204120a(18) =253441a(19) =312000a(20) =379281a(21) =457864a(22) =547009a(23) =649728a(24) =765025a(25) =896376a(26) =1042497a(27) =1207360a(28) =1389361a(29) =1593000