1175731200

Appears in sequences

• a(1) = 3, a(n) = smallest multiple of a(n-1) such that 10*a(n) + 1 is prime.at n=19A089325
• Denominators of an asymptotic series for the factorial function (S. Wehmeier).at n=5A182917
• Denominators of coefficients in C(x) where: C(x)^(1/2) - S(x)^(1/2) = 1 such that C'(x)*S(x)^(1/2) = S'(x)*C(x)^(1/2) = 2*x*C(x).at n=9A299431