Number of nX4 0..1 arrays with every element unequal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero.

A303884

Number of nX4 0..1 arrays with every element unequal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =24a(2) =36a(3) =166a(4) =487a(5) =2130a(6) =7433a(7) =30191a(8) =112815a(9) =444834a(10) =1703258a(11) =6646733a(12) =25671427a(13) =99805187a(14) =386632624a(15) =1501187933a(16) =5821487287a(17) =22593096132a(18) =87646018561a(19) =340100396970

External references