Number of n X 3 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

A305637

Number of n X 3 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =14a(2) =29a(3) =78a(4) =255a(5) =743a(6) =2197a(7) =6663a(8) =20052a(9) =60193a(10) =181342a(11) =546463a(12) =1645639a(13) =4957325a(14) =14936474a(15) =45001409a(16) =135584151a(17) =408514453a(18) =1230861778a(19) =3708615800a(20) =11174194280a(21) =33668360081a(22) =101444455039a(23) =305657427545a(24) =920962321425

External references