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 A253677 #18 Feb 16 2025 08:33:24 %S A253677 1,1,2,2,4,12,24,36,216,1296,62208,746496,107495424,46438023168, %T A253677 240734712102912,8423789045905096704,5589622068988418728132608, %U A253677 133524176512370516060034538930176,581306137722148449693374999786222908342272 %N A253677 Product of decimal digits of n-th term of the Look and Say sequence A005150. %H A253677 Alois P. Heinz, <a href="/A253677/b253677.txt">Table of n, a(n) for n = 1..30</a> %H A253677 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LookandSaySequence.html">Look and Say Sequence</a> %H A253677 Wikipedia, <a href="http://en.wikipedia.org/wiki/Look-and-say_sequence">Look-and-Say sequence</a> %F A253677 a(n) = A007954(A005150(n)). %e A253677 a(5) = A007954(A005150(5)) = A007954(111221) = 4. %Y A253677 Cf. A004977, A007954. %K A253677 nonn,base %O A253677 1,3 %A A253677 _Fabian Nedic_, Jan 08 2015