75842
domain: N
Appears in sequences
- Numbers k such that (k+1)*phi(k) is a perfect square.at n=30A069952
- Number of (n+4)X6 0..1 matrices with each 5X5 subblock idempotent.at n=19A224684
- Number of integer partitions of n whose run-lengths are not unimodal.at n=49A332281
- Lapidary numbers.at n=36A332755
- Number of subsets of {1..n} whose sum is a perfect power.at n=19A339554