Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

A305644

Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =9a(2) =13a(3) =31a(4) =79a(5) =168a(6) =430a(7) =1241a(8) =3577a(9) =10976a(10) =35220a(11) =115104a(12) =382846a(13) =1287463a(14) =4355297a(15) =14794917a(16) =50378019a(17) =171779607a(18) =586281739a(19) =2002004862a(20) =6838403076a(21) =23363178277a(22) =79828543393a(23) =272780054792a(24) =932149927652

External references