Number of nX4 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

A298392

Number of nX4 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =13a(2) =29a(3) =112a(4) =432a(5) =1915a(6) =7556a(7) =29657a(8) =123601a(9) =506005a(10) =2045992a(11) =8338063a(12) =34081117a(13) =138882034a(14) =565662142a(15) =2306767356a(16) =9406512939a(17) =38341596638a(18) =156298964930a(19) =637236157303

External references