1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences.
A210349
1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences.
Terms
- a(0) =431a(1) =13566a(2) =423694a(3) =13288986a(4) =416960476a(5) =13085817650a(6) =410707536246
External references
- oeis: A210349