Number of 6Xn 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

A281568

Number of 6Xn 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =0a(1) =310a(2) =18020a(3) =53568a(4) =154722a(5) =347316a(6) =692421a(7) =1275888a(8) =2241388a(9) =3864672a(10) =6600534a(11) =11152312a(12) =18730106a(13) =31334466a(14) =52215554a(15) =86771200a(16) =143873022a(17) =237945548a(18) =392609350a(19) =646423526a(20) =1062014984a(21) =1741176780a(22) =2849127546a(23) =4653300102

External references