Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A306162

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =9a(2) =32a(3) =103a(4) =298a(5) =962a(6) =2966a(7) =8756a(8) =26287a(9) =79873a(10) =241656a(11) =729008a(12) =2201471a(13) =6653034a(14) =20101552a(15) =60722489a(16) =183440897a(17) =554200361a(18) =1674289991a(19) =5058110361a(20) =15280857422a(21) =46164569525a(22) =139466343261a(23) =421337009501

External references