Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
A306171
Number of nX7 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) =21a(1) =237a(2) =252a(3) =1372a(4) =5421a(5) =16195a(6) =53834a(7) =185090a(8) =619073a(9) =2213741a(10) =7903854a(11) =27396112a(12) =97000671a(13) =345456070a(14) =1212355115a(15) =4294891431a(16) =15302228975a(17) =54122847981a(18) =192114679415a(19) =684540291374
External references
- oeis: A306171