196389domain: NAppears in sequencesa(n) = b(n) - c(n) where b(n) is the n-th Fibonacci number greater than 2 and c(n) is the n-th number not in sequence b( ).at n=23A014251Sum of n-th Lucas number (A000032(n)) and n-th Pell number (A000129(n)).at n=15A060405