Perfect Squares and Pythagorean Triples on the Ulam Spiral(youtube.com)1 points·by nyc111·5 maanden geleden·0 commentsyoutube.comPerfect Squares and Pythagorean Triples on the Ulam Spiralhttps://www.youtube.com/watch?v=x4ooQSrdz6g0 commentsPost comment—