Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.
A208122
Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.
Terms
- a(0) =20a(1) =400a(2) =1260a(3) =3969a(4) =34713a(5) =303601a(6) =1432600a(7) =6760000a(8) =45648200a(9) =308248249a(10) =1680152229a(11) =9157915809a(12) =56635398540a(13) =350250912400
External references
- oeis: A208122