Number of white-square subarrays of (n+2)X(5+2) 0..3 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
A230938
Number of white-square subarrays of (n+2)X(5+2) 0..3 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
Terms
- a(0) =8a(1) =146a(2) =522a(3) =6896a(4) =28216a(5) =396950a(6) =1604098a(7) =22368688a(8) =90493348a(9) =1263445694a(10) =5110596026a(11) =71342555920a(12) =288582390848
External references
- oeis: A230938