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.

A358762 Numbers k for which A349905(k) == 2 (mod 4), where A349905(k) is the arithmetic derivative applied to the prime shifted k.

Original entry on oeis.org

4, 9, 10, 14, 24, 25, 33, 34, 35, 38, 39, 49, 54, 58, 60, 64, 69, 82, 84, 85, 86, 88, 93, 95, 104, 106, 111, 119, 121, 122, 133, 134, 135, 141, 143, 144, 145, 146, 150, 158, 160, 169, 177, 184, 189, 198, 202, 203, 204, 205, 206, 210, 213, 215, 220, 224, 226, 228, 234, 248, 249, 253, 254, 260, 265
Offset: 1

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Author

Antti Karttunen, Nov 29 2022

Keywords

Comments

Numbers k for which A003961(k) is one of the terms of A327862.
Numbers k such that A001222(k) == 2*A246260(k) (modulo 4).

Crossrefs

Cf. A001222, A003415, A003961, A010051, A010873, A246260, A327862, A349905, A358752 (characteristic function).
Setwise difference A028260 \ A358760.
Cf. also A358761, A358763.

Programs

Formula

{k | A010873(A349905(k)) = 2}.