This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A061745 #33 Feb 03 2025 21:30:52 %S A061745 12295,19968,20108,19977,22235,20116,20845,19971,20843,20061 %N A061745 Unicode codes for the Han digits. %C A061745 Hanzi (Kanji) characters for digits 0-9 are: 〇, 一, 二, 三, 四, 五, 六, 七, 八, 九 with html character entities resp. 〇, 一, 二, 三, 四, 五, 六, 七, 八, 九. 零 零 is also used for number zero. %C A061745 The hexadecimal values are 3007, 4E00, 4E8C, 4E09, 56DB, 4E94, 516D, 4E03, 516B, 4E5D. %C A061745 From _Alonso del Arte_, Oct 20 2019: (Start) %C A061745 The characters indexed by these code points are more like words than digits, sort of like the difference between the word "three" and the character "3". %C A061745 With one exception, all of these characters come from the CJK Unified Ideographs block, into which they are sorted according to stroke count or stroke count of the primary radical rather than the numerical value of the number word. %C A061745 Only the zero character has an associated numeric value that can be accessed through Java's Character.getNumericValue() function. The rest return -1 to indicate "the character does not have a numeric value." (End) %H A061745 Oracle, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html">Character Class Javadoc</a>. %H A061745 Unicode Standard, <a href="https://www.unicode.org/versions/Unicode9.0.0/ch18.pdf#page=2">East Asia</a>, Version 9.0 - Core Specification, Chapter 18. %H A061745 Unihan Database, <a href="http://unicode.org/charts/unihan.html">Unicode Unihan Database Lookup</a> (characters may be looked up by the hexadecimal values of their code points). %e A061745 The very first character of the CJK Unified Ideographs block is 一 U+4E00 (19968), which means "one". It is followed by two characters not having numeric meaning, and then the next is 七 U+4E03 (19971), which means "seven". %Y A061745 Cf. A327894 (intersection with this sequence is empty). %K A061745 base,fini,full,nonn,word %O A061745 0,1 %A A061745 Robert Lozyniak (11(AT)onna.com), May 07 2001