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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.

A329706 Odd numbers k such that Sum_{j=1..(k-1)/2, gcd(j,k)=1} 1/j == -2*q_2(k) + k*q_2(k)^2 (mod k^3), where q_2(k) = (2^phi(k) - 1)/k is the Euler quotient of k to base 2.

Table of values

n a(n)
1 1
2 3
3 597
4 609
5 1791
6 2035
7 3403
8 3701
9 4263
10 27515
11 27955

List of values

[1, 3, 597, 609, 1791, 2035, 3403, 3701, 4263, 27515, 27955]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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