Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
A306170
Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =13a(1) =105a(2) =123a(3) =544a(4) =1956a(5) =5277a(6) =16195a(7) =52752a(8) =158458a(9) =503426a(10) =1626380a(11) =5018948a(12) =15811628a(13) =50435662a(14) =157657009a(15) =496317068a(16) =1574666421a(17) =4950381192a(18) =15591794060a(19) =49320992460a(20) =155399103321a(21) =489755624503
External references
- oeis: A306170