173183

Properties

Appears in sequences

• Number of dissimilar squarefree quaternary words of length n.at n=14A118311
• The first of two consecutive primes the sum of which is equal to the sum of two consecutive heptagonal numbers.at n=6A298466
• a(n) is the least prime factor of the alternating factorial n! - (n-1)! + (n-2)! - ... 1! for n > 2; a(1) = a(2) = 1.at n=30A359808
• Prime numbersat n=15767