187134

Appears in sequences

• Inscribe two circles of curvature 2 inside a circle of curvature -1. Sequence gives curvatures of the smallest circles that can be sequentially inscribed in such a diagram.at n=13A060790
• Expansion of Product_{k>=1} 1/(1 - x^k)^((3*k+1)*binomial(k+2,3)/4).at n=10A317017
• a(n) = number of primes < n^4.at n=40A380331