Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

A317155

Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =9a(2) =14a(3) =29a(4) =73a(5) =165a(6) =394a(7) =1068a(8) =3018a(9) =8840a(10) =27026a(11) =84994a(12) =270787a(13) =872634a(14) =2836018a(15) =9247013a(16) =30224317a(17) =98998110a(18) =324515834a(19) =1064292227a(20) =3492203429a(21) =11460903801a(22) =37616725965a(23) =123478685661a(24) =405342852398

External references