238850

Appears in sequences

• Numbers n such that n^2 + 1, n^2 + 3, n^2 + 7 and n^2 + 9 are all primes.at n=14A057015
• Numbers n such that n^2 +1, n^2 +3, n^2 +7, n^2 +9 and n^2 +13 are simultaneously prime.at n=2A057095
• Smallest index k such that Fibonacci(k) contains Fibonacci(n) as a proper substring in decimal notation.at n=45A263400
• Numbers k such that k^2 + {1,3,7,13} are prime.at n=20A356109
• Numbers k such that k^2 + {1,3,7,13,163} are prime.at n=9A356175