Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

A298503

Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =12a(2) =10a(3) =50a(4) =148a(5) =493a(6) =2093a(7) =8047a(8) =31951a(9) =128472a(10) =511830a(11) =2047349a(12) =8191875a(13) =32754509a(14) =131023111a(15) =524086312a(16) =2096237838a(17) =8384859457a(18) =33538726179a(19) =134151944073a(20) =536597656559

External references