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.

A077030 Numbers k such that A068340(k)=+/-2.

Original entry on oeis.org

122, 127, 128, 142, 5233
Offset: 1

Views

Author

Zak Seidov, Oct 21 2002

Keywords

Comments

Any subsequent terms are > 10^12. - Lucas A. Brown, Mar 18 2024

Links

Crossrefs

Cf. A068340, A076542, A077031, A077032, A077033.

Programs

  • PARI
    isok(k) = abs(sum(i=1, k, i*moebius(i))) == 2; \\ Michel Marcus, Jan 14 2023

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