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 A363635 #5 Jul 15 2023 06:36:10 %S A363635 1,25,77,91,115,119,121,143,161,175,221,235,265,287,301,329,377,407, %T A363635 415,445,481,493,497,517,535,581,595,625,667,697,749,805,841,851,865, %U A363635 913,943,1015,1043,1045,1105,1177,1207,1225,1247,1351,1363,1375,1391,1403 %N A363635 Ludic numbers that are products of smaller ludic numbers. %e A363635 1 is a term because it is a ludic number and equals the empty product. %e A363635 25 is a term because 25 = 5*5 and both 25 and 5 are ludic numbers. %e A363635 1015 is a term because 1015 = 5*7*29 and both 1015 and the three factors 5, 7, and 29 are ludic numbers. (This is the first term that requires more than two factors.) %Y A363635 Cf. A003309, A363634, A363636. %K A363635 nonn %O A363635 1,2 %A A363635 _Pontus von Brömssen_, Jun 19 2023