A237573 Number of (n+1)X(5+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
769680, 54395184, 4093774632, 313460630304, 23898935623162, 1807232491974520, 138024943528283880, 10448941120238123892, 797725060871305356158, 60393893110722967036808, 4610831174869673938780096
Offset: 1
Keywords
Examples
Some solutions for n=1 ..0..0..3..3..0..1....0..2..0..0..0..1....0..2..3..3..3..3....0..0..2..0..0..0 ..2..2..3..2..3..1....0..1..1..1..0..1....2..3..1..0..0..1....2..2..1..1..2..3
Links
- R. H. Hardin, Table of n, a(n) for n = 1..25
Comments