133998

Appears in sequences

• Coordination sequence for 4-dimensional RR-centered di-isohexagonal orthogonal lattice.at n=23A008528
• Integers whose sum of divisors is a 7th power.at n=9A048257
• a(n) = f(f(f(f(f(n))))), where f(n) is prime(n)-1.at n=15A141139
• a(n) = prime(prime(prime(prime(prime(prime(n)-1)-1)-1)-1)-1)-1, where prime(n) is the n-th prime.at n=6A141185
• Number of Mersenne number parts in all partitions of n.at n=37A264395
• Numbers whose sum of divisors is the seventh power of one of their divisors.at n=4A303999