30989

Appears in sequences

• Numbers k such that (28*10^k + 191)/3 is prime.at n=29A273042
• Expansion of 1/(1 - Sum_{k>=0} x^(2*k*(k+1)+1)).at n=38A282504
• E.g.f.: log(1 + log(1 - x))^2 / 2.at n=5A341587