Number of nX4 0..1 arrays with every element equal to 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

A298059

Number of nX4 0..1 arrays with every element equal to 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =13a(2) =2a(3) =11a(4) =32a(5) =42a(6) =104a(7) =269a(8) =523a(9) =1761a(10) =4271a(11) =9950a(12) =33236a(13) =84720a(14) =210683a(15) =665446a(16) =1772832a(17) =4540852a(18) =13723354a(19) =37563820a(20) =98003395a(21) =287421335a(22) =798136234a(23) =2112310069a(24) =6070832044a(25) =16971983943a(26) =45446410743a(27) =128849163703a(28) =361098610655

External references