66840

Appears in sequences

• Let S denote the palindromes in the language {0,1}*; a(n) = number of words of length n in the language SS.at n=22A007055
• Expansion of Sum_{k>=2} x^Fibonacci(k)/(1 - x^Fibonacci(k)) / Product_{k>=2} (1 - x^Fibonacci(k)).at n=48A281689