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Template:Sequence of the Day for July 16
From OeisWiki
Intended for: July 16, 2012
Timetable
- First draft entered by Alonso del Arte on July 10, 2011 ✓
- Draft reviewed by Alonso del Arte on May 10, 2012 ✓, Daniel Forgues on Jul 16, 2018 ✓
- Draft to be approved by June 16, 2012
Yesterday's SOTD * Tomorrow's SOTD |
The line below marks the end of the <noinclude> ... </noinclude> section.
4 i (8 j + 7), i ≥ 0, j ≥ 0 |
- { 7, 15, 23, 28, 31, 39, 47, ... }
From Waring’s problem we know that all positive integers can be expressed as a sum of at most four squares. In fact, most numbers can be expressed as the sum of fewer than four squares, even though the perfect squares thin out quadratically.