Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
A305011
Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =2a(1) =10a(2) =31a(3) =42a(4) =255a(5) =862a(6) =2200a(7) =8807a(8) =33055a(9) =106158a(10) =385363a(11) =1430563a(12) =4984613a(13) =17903390a(14) =65557446a(15) =234669342a(16) =845691032a(17) =3078003683a(18) =11115610686a(19) =40193431243a(20) =145975752428a(21) =528747707176
External references
- oeis: A305011