Template:Sequence of the Day for February 23

Intended for: February 23, 2012

Timetable

First draft entered by Alonso del Arte on November 25, 2011 based on remarks by Henry Bottomley ✓
Draft reviewed by Daniel Forgues on February 22, 2016 ✓
Draft to be approved by January 23, 2012

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ψ (n)

: least

k

such that

x k ≡ 1 (mod n)

for all

x

coprime to

n

.

{ 1, 1, 2, 2, 4, 2, 6, 2, 6, 4, 10, 2, 12, 6, 4, 4, 16, ... }

This is also the largest period of repeating digits of

1

n

written in different bases.