Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.
A207718
Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =6a(1) =36a(2) =114a(3) =450a(4) =1644a(5) =6186a(6) =23010a(7) =85992a(8) =320742a(9) =1197318a(10) =4467984a(11) =16675494a(12) =62232582a(13) =232257108a(14) =866792178a(15) =3234917538a(16) =12072868380a(17) =45056571498a(18) =168153392514a(19) =627557039160
External references
- oeis: A207718