Template:Sequence of the Day for February 26

Intended for: February 26, 2012

Timetable

• First draft entered by Alonso del Arte on November 23, 2011 ✓
• Draft reviewed by Daniel Forgues on February 22, 2016 ✓
• Draft to be approved by January 26, 2012

Yesterday's SOTD * Tomorrow's SOTD

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A003064: Smallest number with addition chain of length

n

.

{ 1, 2, 3, 5, 7, 11, 19, 29, 47, 71, 127, ... }

What could be simpler than a sequence about addition? And yet, obtaining terms of this sequence beyond

a (24)

has involved many different people working independently of each other.