Number of 4Xn binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.
A268889
Number of 4Xn binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =71a(2) =462a(3) =4133a(4) =27130a(5) =186732a(6) =1187838a(7) =7529253a(8) =46440962a(9) =283673207a(10) =1710265892a(11) =10226321520a(12) =60660804228a(13) =357586190291
External references
- oeis: A268889