Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

A298225

Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =4a(2) =5a(3) =17a(4) =12a(5) =100a(6) =219a(7) =498a(8) =1999a(9) =4953a(10) =13928a(11) =45164a(12) =120865a(13) =355474a(14) =1065723a(15) =2987665a(16) =8792232a(17) =25703174a(18) =73648001a(19) =215508142a(20) =625811209a(21) =1809121989a(22) =5271819208a(23) =15292192284a(24) =44347119815a(25) =128947618162a(26) =374125557341

External references