Number of (n+1)X(2+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237561
Number of (n+1)X(2+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =316a(1) =1536a(2) =7356a(3) =36168a(4) =175768a(5) =848720a(6) =4121060a(7) =20050460a(8) =97225972a(9) =471641072a(10) =2290359200a(11) =11118632740a(12) =53953373220a(13) =261887194692
External references
- oeis: A237561