823540

Appears in sequences

• Maximal m such that n^n-m and n^n+m are both primes, or -1 if there is no such m.at n=5A075469
• Numbers of the form p^p - 3 where p is prime.at n=3A088731
• a(n)/2^n is the expected length of the longest palindromic subsequence of a length-n binary string.at n=15A320910