Number of n X 2 0..1 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..1 introduced in row major order.
A240513
Number of n X 2 0..1 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..1 introduced in row major order.
Terms
- a(0) =2a(1) =3a(2) =6a(3) =10a(4) =21a(5) =42a(6) =86a(7) =179a(8) =370a(9) =770a(10) =1601a(11) =3330a(12) =6930a(13) =14419a(14) =30006a(15) =62442a(16) =129941a(17) =270410a(18) =562726a(19) =1171043a(20) =2436962a(21) =5071362a(22) =10553601a(23) =21962242a(24) =45703842a(25) =95110563a(26) =197926886a(27) =411889610a(28) =857150101a(29) =1783745642
External references
- oeis: A240513