23891

Appears in sequences

• Discriminants of quintic fields with 2 complex conjugates (negated).at n=48A023684
• G.f. A(x) satisfies: A(x) = x + B(x)*C(x), where B(x) = x + 2*C(x)*A(x) and C(x) = x + 3*B(x)*A(x).at n=7A229811
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 177", based on the 5-celled von Neumann neighborhood.at n=31A270620
• Smallest positive integer m such that (m^(2^n) + 1)/2 is prime.at n=16A275530
• Expansion of Product_{k>=1} (1 + x^k) * (1 + x^(k^2)) * (1 + x^(k^3)).at n=45A369575