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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.

A275584 Primes p such that S_e(p-1)/S_o(p-1) is an integer, where S_e(x) is the sum of the even numbers and S_o(x) is the sum of the odd numbers in the Collatz iteration of x.

Table of values

n a(n)
1 2
2 3
3 5
4 17
5 257
6 59393
7 65537
8 331777
9 534529
10 1299457

List of values

[2, 3, 5, 17, 257, 59393, 65537, 331777, 534529, 1299457]

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

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