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# OeisWiki:Community Portal

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## Sequence of the Day for May 25

A202300: Decimal expansion of the real root of
 x3 + 2x2 + 10x − 20
.
 1.36880810782137...
Today, we could get a thousand digits of this number in any base we wanted just by pushing a few buttons. But in Fibonacci's day, it was quite an achievement to get this number correct to five sexagesimal places, $\scriptstyle 1 + \frac{22}{60} + \frac{7}{60^2} + \frac{42}{60^3} + \frac{33}{60^4} + \frac{4}{60^5} + \frac{40}{60^6} \,$, approximately
 1.36881
in decimal, which as you can see matches the correct answer to ten decimal places.