Number of nX6 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.
A268626
Number of nX6 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.
Terms
- a(0) =336a(1) =8586a(2) =187224a(3) =3819654a(4) =74914554a(5) =1430057208a(6) =26758514760a(7) =493042858032
External references
- oeis: A268626