80472

Appears in sequences

• a(n) = Sum_{k=0..n} (k+1) * A026747(n, k).at n=12A027227
• a(n) is a non-palindromic composite located between twin primes whose reverse, which is less than it, is also located between twin primes.at n=27A103741
• Elements of A103741 that do not terminate in a zero digit.at n=8A103764
• Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|<|x-y|+|y-z|.at n=18A212571
• Factorial base Niven numbers (A118363) with a record gap to the next factorial base Niven number.at n=22A347495