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Meaning of Pell number | Babel Free

Noun CEFR B2

Definitions

An infinite sequence of integers that comprises the denominators of the closest rational approximations to the square root of 2.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

Pell-Fermat equation pell-mell Pell's equation Pella pellack pellage

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