121439

Properties

Appears in sequences

• Number of unordered factorizations of n! into two distinct proper factors.at n=22A157672
• Expansion of Product_{k>=1} 1/((1-x^(3*k-1))*(1-x^(3*k-2)))^k.at n=37A262883
• Lesser of twin primes P(k) and P(k+1) such that Sd(P(k)) + Sd(P(k+1)) = Sd(k) + Sd(k+1), where Sd(x) is the sum of digits of x.at n=18A277111
• Numbers k such that w(k), w(k+1), and w(k+2) are all odd, where w is A360519.at n=39A361106
• Prime numbersat n=11428