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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.

A356415 a(n) is the least start of exactly n consecutive numbers that have an equal number of even and odd exponents in their prime factorization (A187039), or -1 if no such run of consecutive numbers exists.

Table of values

n a(n)
1 1
2 44
3 603
4 906596
5 792007675

List of values

[1, 44, 603, 906596, 792007675]

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

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