Number of nX7 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A281468
Number of nX7 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =64a(1) =361a(2) =145a(3) =260a(4) =472a(5) =924a(6) =1887a(7) =3681a(8) =7126a(9) =14363a(10) =29371a(11) =59830a(12) =122230a(13) =250638a(14) =513616a(15) =1053242a(16) =2163243a(17) =4442634a(18) =9122210a(19) =18740008a(20) =38502723a(21) =79097291a(22) =162508103a(23) =333905314a(24) =686048845a(25) =1409580474a(26) =2896272475a(27) =5950951790
External references
- oeis: A281468