73217

Appears in sequences

• Floor(R(10^n)) - pi(10^n), where pi(x) is the number of primes <= x, R(x) = Sum_{ k>=1 } ((mu(k)/k) * li(x^(1/k))) and li(x) is the Cauchy principal value of the integral from 0 to x of dt/log(t).at n=14A215663
• Numbers k such that (59*10^k - 77)/9 is prime.at n=21A294631
• L.g.f.: -log( Sum_{n=-oo..+oo} (-p)^n * (p*x)^(n^2) ) = Sum_{n>=1} a(n) * x^n/n, where p = sqrt(2).at n=15A337948
• Coefficient of x^n in the expansion of ( (1+x+x^3)^2 / (1+x) )^n.at n=11A372371