Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.
A207028
Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.
Terms
- a(0) =10a(1) =100a(2) =270a(3) =1035a(4) =3315a(5) =8280a(6) =23400a(7) =56814a(8) =136114a(9) =322834a(10) =725005a(11) =1627260a(12) =3560880a(13) =7664285a(14) =16349062a(15) =34340640a(16) =71524992a(17) =147574233a(18) =301825437a(19) =613141606a(20) =1236720905a(21) =2479598284a(22) =4944012260a(23) =9806225404a(24) =19359765906
External references
- oeis: A207028