304656

Appears in sequences

• a(n) = 529*n^2 - 2*n.at n=23A158364
• Numbers k such that prime(k) + {1,2,3,4,5,6} are all products of three primes.at n=17A255194
• G.f. A(x) satisfies A(x) = 1/( 1 - x * (1 + 4*x)^(1/2) * A(x) ).at n=10A372115