A371083 Nonsquarefree numbers that are not divisible by p^p for any prime p.

9, 18, 25, 45, 49, 50, 63, 75, 90, 98, 99, 117, 121, 125, 126, 147, 150, 153, 169, 171, 175, 198, 207, 225, 234, 242, 245, 250, 261, 275, 279, 289, 294, 306, 315, 325, 333, 338, 342, 343, 350, 361, 363, 369, 375, 387, 414, 423, 425, 441, 450, 475, 477, 490, 495, 507, 522, 525, 529, 531, 539, 549, 550, 558, 575, 578

Offset: 1

Author

Antti Karttunen, Mar 12 2024

Keywords

• nonn

Comments

The asymptotic density of this sequence is Product_{p prime} (1 - 1/p^p) - 6/Pi^2 = 0.1140631325... . - Amiram Eldar, Mar 12 2024

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10000

Crossrefs

Intersection of A013929 and A048103.

Cf. A371084 (characteristic function), A371085 (subsequence), A059956.

Programs

PARI

\\ See A371083.