Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 6 or 8 king-move adjacent elements, with upper left element zero.
A305481
Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 6 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =21a(1) =103a(2) =125a(3) =368a(4) =1245a(5) =3910a(6) =11438a(7) =34687a(8) =106558a(9) =317866a(10) =952180a(11) =2866802a(12) =8566865a(13) =25602599a(14) =76565334a(15) =228533963a(16) =682228237a(17) =2036249074a(18) =6073671043a(19) =18119697325a(20) =54049396886a(21) =161180119634a(22) =480704637867
External references
- oeis: A305481