Number of n X 2 0..1 arrays with every element equal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

A297972

Number of n X 2 0..1 arrays with every element equal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =6a(4) =17a(5) =41a(6) =104a(7) =261a(8) =655a(9) =1646a(10) =4133a(11) =10381a(12) =26072a(13) =65481a(14) =164459a(15) =413046a(16) =1037385a(17) =2605441a(18) =6543688a(19) =16434781a(20) =41276727a(21) =103668446a(22) =260368189a(23) =653926981a(24) =1642368440a(25) =4124885761a(26) =10359845043a(27) =26019239206a(28) =65348545857a(29) =164125953561

External references