Number of (n+2) X 5 0..3 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..3 introduced in row major order.
A204637
Number of (n+2) X 5 0..3 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..3 introduced in row major order.
Terms
- a(0) =1781a(1) =5974a(2) =248a(3) =933a(4) =760a(5) =2517a(6) =9750a(7) =28856a(8) =108520a(9) =412247a(10) =1538786a(11) =5831457a(12) =22111228a(13) =83757474a(14) =317540856a(15) =1203895697a(16) =4564096372a(17) =17303777693a(18) =65603619578a(19) =248721544020a(20) =942974882152
External references
- oeis: A204637