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Leonardo da Pisa, Liber abaci, Ms. Biblioteca Nazionale di Firenze, Codice magliabechiano Conv. Soppr. C 1, 2616, fol. 124r Source: Heinz Lüneburg, Leonardi Pisani Liber Abaci oder Lesevergnügen eines Mathematikers, 2. überarb. und erw. Ausg., Mannheim et al.: BI Wissenschaftsverlag, 1993 I

1228.

On the right margin of the page from top to bottom: The position in the sequence labeled in brownish Latin and Roman numerals and the value in red Hindu-Arabic numerals:^[1]
${\displaystyle {\mathfrak {parium}}}$
    1
${\displaystyle {\mathfrak {primus}}}$
    2
${\displaystyle {\mathfrak {Secundus}}}$
    3
${\displaystyle {\mathfrak {tercius}}}$
    5
${\displaystyle {\mathfrak {Quartus}}}$
    8
${\displaystyle {\mathfrak {Quintus}}}$
    13
${\displaystyle {\mathfrak {Sestus}}}$
    21
${\displaystyle {\mathfrak {Septimus}}}$
    34
${\displaystyle {\mathfrak {Octauus}}}$
    55
${\displaystyle {\mathfrak {Nonus}}}$
    89
${\displaystyle {\mathfrak {X}}}$
    144
${\displaystyle {\mathfrak {Xl}}}$
    233
${\displaystyle {\mathfrak {Xll}}}$
    377

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1. ↑ Liber Abaci in English translation