Number of n X 3 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

A298282

Number of n X 3 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =25a(2) =70a(3) =205a(4) =614a(5) =1860a(6) =5631a(7) =17034a(8) =51507a(9) =155755a(10) =471038a(11) =1424553a(12) =4308225a(13) =13029159a(14) =39403450a(15) =119165999a(16) =360388207a(17) =1089905354a(18) =3296150132a(19) =9968393611a(20) =30146949453a(21) =91172018210a(22) =275727297765a(23) =833869252932

External references