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

A279651

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

Terms

    a(0) =1a(1) =3a(2) =24a(3) =232a(4) =2232a(5) =20880a(6) =190656a(7) =1707264a(8) =15046272a(9) =130854656a(10) =1125285888a(11) =9583835136a(12) =80941029376a(13) =678574706688

External references