cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A349065 Odd numbers k such that A183097(k) > 2*k.

Original entry on oeis.org

3472875, 10418625, 17364375, 24310125, 31255875, 52093125, 72930375, 86821875, 93767625, 121550625, 156279375, 170170875, 202145625, 218791125, 260465625, 281302875, 364651875, 420217875, 434109375, 468838125, 510512625, 586915875, 606436875, 607753125, 656373375
Offset: 1

Views

Author

Amiram Eldar, Nov 07 2021

Keywords

Comments

The odd terms of A349064.

Examples

			3472875 is a term since A183097(3472875) = 7002474 > 2*3472875 = 6945750.
		

Crossrefs

Subsequence of A005101, A005231 and A349064.

Programs

  • Mathematica
    f[p_, e_] := (p^(e + 1) - 1)/(p - 1) - p; s[1] = 1; s[n_] := Times @@ f @@@ FactorInteger[n]; q[n_] := s[n] > 2*n; Select[Range[1, 2.5*10^7, 2], q]
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