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 A058230 #42 Mar 26 2021 12:43:06
%S A058230 4,24,84672,1852200,829785600,20910597120,92215733299200,
%T A058230 1239789303244800000,887165996513213819259682435576627200000000
%N A058230 Numbers k such that the product of the lengths of the words in the name of k in American English is equal to k.
%C A058230 This sequence uses American English spellings; e.g., 84672 ends in "six hundred seventy-two", not "six hundred and seventy-two" (cf. A006944). Also, for purposes of this sequence, hyphens are treated as spaces, so "seventy-two" is counted as two words ("seventy two"). - _Jon E. Schoenfield_, Nov 18 2018
%C A058230 a(10) > 10^138 if it exists. - _Jonathan Pappas_, Mar 12 2021
%H A058230 Jonathan Pappas, <a href="https://github.com/JonnyGamer/A058230">Python program</a>
%e A058230 84672 = "eighty four thousand six hundred seventy two" = 6*4*8*3*7*7*3 = 84672.
%t A058230 Select[Range[10^5],Times@@StringLength/@StringSplit[StringReplace[#~IntegerName~"Words",{","->"","-"->" "}]]==#&] (* _Giorgos Kalogeropoulos_, Mar 20 2021 *)
%o A058230 (Python)
%o A058230 # See Python program link.
%o A058230 # _Jonathan Pappas_, Mar 12 2021
%K A058230 dumb,nonn,word
%O A058230 1,1
%A A058230 _Michael Kleber_, Dec 01 2000
%E A058230 a(7)-a(9) from _Jonathan Pappas_, Mar 12 2021