117707

Appears in sequences

• Numerators of sequence of fractions defined by a(1) = a(2) = 1; for n > 2, a(n) = (a(n-1)+a(n-2)+1)/a(n-2).at n=10A076842
• Numbers k such that (10^(2k+1) + 12*10^k - 1)/3 is prime.at n=13A183176