Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

A281767

Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =0a(1) =10a(2) =47a(3) =152a(4) =609a(5) =2138a(6) =7466a(7) =25798a(8) =87397a(9) =293470a(10) =979311a(11) =3235714a(12) =10650401a(13) =34842532a(14) =113507950a(15) =368400482a(16) =1191351902a(17) =3841448788a(18) =12352142633a(19) =39620840414a(20) =126807886700a(21) =405026431154

External references