80747

Properties

Appears in sequences

• Primes p such that p and p+2 are twin primes and also the strings 987654321p and 987654321p+2 are twin primes.at n=21A103818
• Primes p such that p,q,r,s are consecutive primes and 2p+9, 2q+9, 2r+9, 2s+9 are also primes.at n=19A190354
• Number of partitions of 2n such that (sum of parts having multiplicity 1) = sum of all other parts.at n=35A240447
• Expansion of Product_{k>=1} 1/(1 - x^k)^(k-phi(k)), where phi() is the Euler totient function (A000010).at n=35A307705
• Prime numbersat n=7902