Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

A305448

Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =10a(2) =20a(3) =26a(4) =169a(5) =475a(6) =1234a(7) =5007a(8) =16422a(9) =51196a(10) =182859a(11) =619558a(12) =2064945a(13) =7171550a(14) =24597409a(15) =83961318a(16) =290423638a(17) =1002057750a(18) =3452837246a(19) =11953834123a(20) =41373636357a(21) =143157425820a(22) =496258006589

External references