Number of (n+1) X (2+1) 0..2 arrays with the maximum plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237228
Number of (n+1) X (2+1) 0..2 arrays with the maximum plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =268a(1) =984a(2) =3284a(3) =10888a(4) =36180a(5) =120540a(6) =401520a(7) =1336540a(8) =4448892a(9) =14811704a(10) =49313092a(11) =164172108a(12) =546554288a(13) =1819586828a(14) =6057775468a(15) =20167512408a(16) =67141506132a(17) =223527096380a(18) =744165226864
External references
- oeis: A237228