Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.
A207694
Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.
Terms
- a(0) =6a(1) =36a(2) =60a(3) =100a(4) =240a(5) =576a(6) =1296a(7) =2916a(8) =6804a(9) =15876a(10) =36288a(11) =82944a(12) =191808a(13) =443556a(14) =1018980a(15) =2340900a(16) =5397840a(17) =12446784a(18) =28640304a(19) =65901924a(20) =151822836a(21) =349764804a(22) =805233312a(23) =1853819136a(24) =4269519072a(25) =9833102244a(26) =22641659460a(27) =52134588900
External references
- oeis: A207694