Number of 3 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 0 vertically.
A207306
Number of 3 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 0 vertically.
Terms
- a(0) =6a(1) =36a(2) =98a(3) =271a(4) =665a(5) =1675a(6) =4344a(7) =11081a(8) =28136a(9) =71908a(10) =183709a(11) =468421a(12) =1195165a(13) =3050758a(14) =7784759a(15) =19863812a(16) =50690966a(17) =129357269a(18) =330093729a(19) =842344955a(20) =2149538940a(21) =5485269169a(22) =13997500468a(23) =35719380356a(24) =91150094557a(25) =232600215969
External references
- oeis: A207306