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The middle entries of the trinomial triangle 1, 1, 3, 7, 19, 51, 141, 393, 1107, 3139, … (sequence A002426 in the OEIS). were studied by Euler and are known as central trinomial coefficients.
On 7 April 1795, the metric system was formally defined in French law using six units. Three of these are related to volume: the stère (1 m 3) for volume of firewood; the litre (1 dm 3) for volumes of liquid; and the gramme, for mass—defined as the mass of one cubic centimetre of water at the temperature of melting ice. [10]
Volumen is a Latin word for "roll" or "volume" and may refer to: a book in roll form; see rotulus , scroll and History of scrolls Volumen (DVD) by the singer-songwriter Björk