Number of n X 4 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A299510

Number of n X 4 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =13a(2) =29a(3) =112a(4) =439a(5) =1950a(6) =7702a(7) =30277a(8) =126429a(9) =518642a(10) =2100761a(11) =8578886a(12) =35145230a(13) =143528336a(14) =585829218a(15) =2394199252a(16) =9784418458a(17) =39968678821a(18) =163285521413a(19) =667170458474

External references