Pell number
plural of state of matter
(mathematics, number theory) An infinite sequence of integers that comprises the denominators of the closest rational approximations to the square root of 2.
(American football) A formation with two halfbacks, where one lines up just behind the line of scrimmage between the split end and the offensive tackle, and the other lines up behind the quarterbac...
ocean liner with four funnels
√2の最も近い有理近似の分母を成す無限の整数列の一項は、しばしばそのような近似の分母として現れる。
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DiQt
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