Number of n X 7 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.
A208141
Number of n X 7 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.
Terms
- a(0) =20a(1) =400a(2) =3000a(3) =14000a(4) =49000a(5) =141120a(6) =352800a(7) =792000a(8) =1633500a(9) =3146000a(10) =5725720a(11) =9937200a(12) =16562000a(13) =26656000a(14) =41616000a(15) =63256320a(16) =93896100a(17) =136458000a(18) =194579000a(19) =272734000a(20) =376372920a(21) =512072000a(22) =687700000a(23) =912600000a(24) =1197787500
External references
- oeis: A208141