From the first paragraph in the article you linked: > Many writers begin the sequence with 0 and 1, although some authors start it from 1 and 1[1][2] and some

From the first paragraph in the article you linked: > Many writers begin the sequence with 0 and 1, although some authors start it from 1 and 1[1][2] and some (as did Fibonacci) from 1 and 2.