A344029 Numbers included in A343983 but not in A074583.

72, 2025, 78447, 5922181, 84238825, 1141011175

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

If n is in A074583, n can be expressed as n = p^e (p>=e) using the prime p.
On the other hand, the terms of this sequence are factorized as follows.
72 = 2^3 * 3^2.
2025 = 3^4 * 5^2.
78447 = 3 * 79 * 331.
5922181 = 71 * 239 * 349.
84238825 = 5^2 * 11 * 17 * 37 * 487.

Prog

(PARI) isok(n) = my(f=factor(n)); sumdiv(n, d, Mod(d, n)^d)==1 && n>1 && !(#f~==1 && f[1, 1]>=f[1, 2]);

Crossrefs

Cf. A074583, A343983.

Sequence in context: A268749 A008659 A263974 * A187303 A268994 A347566

Adjacent sequences: A344026 A344027 A344028 * A344030 A344031 A344032

Keyword

nonn,more

Author

Seiichi Manyama, May 07 2021

Extensions

a(6) from Seiichi Manyama, Aug 01 2023

Status

approved