Number of n X 2 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

A279128

Number of n X 2 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =1a(1) =0a(2) =9a(3) =34a(4) =87a(5) =194a(6) =400a(7) =790a(8) =1511a(9) =2830a(10) =5213a(11) =9484a(12) =17080a(13) =30508a(14) =54117a(15) =95434a(16) =167443a(17) =292486a(18) =508912a(19) =882402a(20) =1525219a(21) =2628886a(22) =4519577a(23) =7751888a(24) =13267384a(25) =22662360a(26) =38639553a(27) =65769394a(28) =111771663a(29) =189671306

External references