Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A318088
Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =7a(3) =159a(4) =493a(5) =1945a(6) =8525a(7) =37863a(8) =161424a(9) =688404a(10) =2927486a(11) =12630400a(12) =54054127a(13) =233057675a(14) =997644574a(15) =4291179236a(16) =18396315644a(17) =79062911556a(18) =339244535826
External references
- oeis: A318088