Vincenzo Manto

A397933

Numbers k that are neither squarefree nor powerful such that rad(k)*bigomega(k) = k, where rad = A007947 and bigomega = A001222.

Created: 7/23/2026 | Author: Michael De Vlieger , James C. McMahon , and Vincenzo Manto , Jul 16 2026

This sequence has been cited by and influenced 3 other sequences

Official Comments

A396594 is the union of this sequence and A175787 (the primes and 4).
Intersection of A332785 and A396594.
A397658 \ {2, 4} is a proper subset.

Sequence Chart

Graph of A397933

Data

18,24,40,45,56,63,88,99,104,117,136,152,153,171,184,207,232,248,261,279,296,328,333,344,369,376,387,423,424,472,477,488,531,536,549,568,584,603,632,639,657,664,711,712,747,776,801,808,824,856,872,873,904,909

Cross-References

See also OEIS entries: Cf A001222 A007947 A175787 A332785 A396594 A397658 A397932 A397934