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 A092447 #25 Feb 24 2024 01:08:33
%S A092447 3,53,753,11753,1311753,171311753,19171311753,2319171311753,
%T A092447 292319171311753,31292319171311753,3731292319171311753,
%U A092447 413731292319171311753,43413731292319171311753,4743413731292319171311753,534743413731292319171311753,59534743413731292319171311753
%N A092447 Concatenate odd primes in decreasing order.
%H A092447 Andrew Howroyd, <a href="/A092447/b092447.txt">Table of n, a(n) for n = 1..100</a>
%H A092447 M. Fleuren, <a href="http://www.gallup.unm.edu/~smarandache/SmBackConOddPrimes.htm">Smarandache Back Concatenated Odd Primes</a>
%H A092447 H. Marimutha, <a href="http://www.gallup.unm.edu/~smarandache/smarcon.htm">Smarandache Concatenated Type Sequences</a>, Bulletin of Pure and Applied Sciences, Vol. 16 E(No.2), 1997; p. 225-226.
%H A092447 F. Smarandache, <a href="http://www.gallup.unm.edu/~smarandache/CP2.pdf">Collected papers, Vol. II</a>, University of Kishinev, 1997.
%t A092447 Table[FromDigits[Flatten[IntegerDigits/@Reverse[Prime[Range[2,n]]]]],{n,2,21}] (* _Harvey P. Dale_, Mar 01 2023 *)
%o A092447 (PARI) a(n)={fromdigits(concat([digits(k) | k<-Vecrev(primes(n+1))[1..n]]))} \\ _Andrew Howroyd_, Feb 12 2020
%Y A092447 Primes in A092448 and their corresponding starting value in A100003. [_Dmitry Kamenetsky_, Mar 02 2009]
%Y A092447 Cf. A065091 (odd primes).
%K A092447 nonn,base
%O A092447 1,1
%A A092447 Micha Fleuren (michafleuren(AT)hotmail.com), Mar 24 2004
%E A092447 More terms from _Ray Chandler_, Mar 28 2004
%E A092447 Offset corrected by _Michel Marcus_, Aug 15 2017
%E A092447 Terms a(14) and beyond from _Andrew Howroyd_, Feb 12 2020