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 A381849 #28 May 22 2025 21:31:06 %S A381849 1,2,4,6,12,24,36,48,60,120,180,240,360,420,840,1680,2520,5040,7560, %T A381849 10080,12600,15120,20160,25200,27720,55440,83160,110880,138600,166320, %U A381849 221760,277200,332640,360360,720720,1441440,2162160,2882880,3603600,4324320,5765760,6486480,7207200,8648640 %N A381849 Intersection of A025487 and A242298. %C A381849 This sequence properly includes the deeply composite numbers (A095848). 36 and 180 are the first terms of this sequence that are not deeply composite. %e A381849 Once we get to 60, all succeeding terms in the sequence must be divisible by 1, 2, 3, 4, 5, and 6. However, not all multiples of 60 that are less than 420 (LCM(1,...,7)) have least prime signature, so 300 is excluded. All other multiples of 60 between 60 and 420 have least prime signature, so they are terms of this sequence. %Y A381849 Cf. A025487, A095848, A242298. %K A381849 nonn %O A381849 1,2 %A A381849 _Hal M. Switkay_, May 18 2025