182909

Appears in sequences

• Numbers k such that k^2 + k - 1 and k^2 + k + 1 are twin primes and (k + 1)*(k + 1) + k + 1 - 1 and (k + 1)*(k + 1) + k + 1 + 1 are also twin primes.at n=25A088498
• Number of cubic graphs on 2n nodes with nontrivial automorphism group.at n=8A204328