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 A201023 #11 Feb 16 2025 08:33:16 %S A201023 8,18,24,36,38,42,46,49,63,64,66,76,77,81,88,92,94,99,118,124,129,136, %T A201023 138,142,146,164,166,176,177,183,188,192,194,214,219,222,226,234,236, %U A201023 237,243,248,262,273,284,291,292,316,318,323,324,326,327,332,334,339 %N A201023 Composite numbers whose multiplicative digital root is 8. %C A201023 Complement of A201022 with respect to A034055. %H A201023 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MultiplicativeDigitalRoot.html">Multiplicative Digital Root</a> %F A201023 Composite number 124 is in the sequence because 1*2*4=8. %Y A201023 Cf. A201022 (primes whose multiplicative digital root is 8), A034055 (numbers whose multiplicative digital root is 8). %K A201023 nonn,base %O A201023 1,1 %A A201023 _Jaroslav Krizek_, Nov 25 2011