-1476

Appears in sequences

• (Integer nearest 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=11A057794
• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=2, k=-2 and l=0.at n=8A177113
• 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=11A215663
• Expansion of q * (f(q^9) / f(q))^3 in powers of q where f() is a Ramanujan theta function.at n=9A227454
• Start with 2, then successively subtract the primes 3, 5, 7, ...at n=28A282329
• Triangle read by rows: Polynomial coefficients per comment.at n=26A290053
• Expansion of 1 / Sum_{k in Z} x^(3*k) / (1 - x^(5*k+1)).at n=47A375064