89894684880
domain: N
Appears in sequences
- Numerator of the harmonic mean of the first n pentagonal numbers.at n=10A250327
- Amicable 5-tuples: (x1,...,x5) such that sigma(x1)=...=sigma(x5)=x1+...+x5, x1<x2<x3<x4<x5. Sequence gives x2 numbers.at n=5A273930
- Amicable 5-tuples: (x1,...,x5) such that sigma(x1)=...=sigma(x5)=x1+...+x5, x1<x2<x3<x4<x5. Sequence gives x2 numbers.at n=6A273930