43471

Appears in sequences

• Numbers k such that k-1 and k+1 are each the product of exactly 7 primes, counted with multiplicity.at n=11A157487
• Number of wedged n-spheres in the homotopy type of the neighborhood complex of Kneser graph KG_{3,n}.at n=17A342737
• Integers k such that the number of divisors of k^2 - 1 (A347191) sets a new record.at n=31A347192