131194

Appears in sequences

• Numbers which form a prime by appending a 3-digit odd number and form no primes by appending any 1- or 2-digit odd number not beginning with 0.at n=31A091089
• Number of compositions of n into distinct parts with exactly three descents.at n=27A241722
• Numbers which form a prime by appending a 3-digit number and form no primes by appending 1 digit or 2 digits.at n=17A365813