Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.
A207591
Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.
Terms
- a(0) =9a(1) =81a(2) =144a(3) =432a(4) =1098a(5) =3150a(6) =8244a(7) =23202a(8) =61560a(9) =171468a(10) =458640a(11) =1269144a(12) =3412944a(13) =9402156a(14) =25378560a(15) =69694632a(16) =188620632a(17) =516830904a(18) =1401394608a(19) =3833746488a(20) =10409369472a(21) =28443841344a(22) =77305743936a(23) =211065666624a(24) =574042728672
External references
- oeis: A207591