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 A380770 #17 Mar 06 2025 14:41:15
%S A380770 3,3,3,3,5,3,4,5,4,5,5,6,8,8,10,8,9,10,9,10,7,12,12,12,14,12,13,14,13,
%T A380770 14,8,13,13,13,15,13,14,15,14,15,10,15,15,15,17,15,16,17,16,17,8,13,
%U A380770 13,13,15,13,14,15,14,15,9,14,14,14,16,14,15,16,15,16,10,15,15,15,17,15,16,17,16,17,9,14,14,14,16,14,15,16,15
%N A380770 Number of letters in the Slovene name of n (feminine, nominative), excluding spaces.
%C A380770 Repeatedly applying the map k -> a(k) to any starting value n always leads to 3 = "tri".
%C A380770 There is difference in gender (nominative) for number 1 and number 2.
%C A380770 1 - en (m.), ena (f.), eno (n.)
%C A380770 2 - dva (m.), dve (f.), dve (n.)
%C A380770 and similar 101, 201, etc, ...
%C A380770 All other numbers have the same form for all genders.
%H A380770 ŠUSS, <a href="http://www2.arnes.si/~lmarus/suss/arhiv/suss-arhiv-000396.html">How do you spell 143800 in words?</a> (in Slovenian).
%H A380770 <a href="/index/Lc#letters">Index entries for sequences related to number of letters in n</a>
%e A380770 a(0)=3 [nič], a(1)=3 [ena], a(2)=3 [dve], a(3)=3 [tri], a(4)=5 [štiri]
%o A380770 (Python)
%o A380770 from num2words import num2words
%o A380770 def a(n):
%o A380770 return len(num2words(n, lang='sl').replace(' ', ''))
%o A380770 print([a(n) for n in range(1000)])
%Y A380770 Cf. A005589.
%K A380770 nonn,word
%O A380770 0,1
%A A380770 _Andrej Jakobcic_, Feb 02 2025