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 A369641 #9 Jan 31 2024 16:56:12 %S A369641 9,10,14,15,16,28,30,45,58,62,74,87,108,112,136,155,161,189,198,203, %T A369641 209,210,212,217,221,225,236,244,246,247,282,290,299,323,361,374,399, %U A369641 422,435,478,482,507,717,1055,1205,1477,1480,1631,1673,1687,1940,2132,2189,2212,2308,2356,2519,2524,2561,2587,2655,2766 %N A369641 Composite numbers k such that k' is a sum of distinct primorial numbers, where k' stands for the arithmetic derivative of k, A003415. %C A369641 Composite terms of A341518, i.e., composite numbers k such that A327859(k) = A276086(A003415(k)) is squarefree number, or equally, k' is in A276156. %H A369641 Antti Karttunen, <a href="/A369641/b369641.txt">Table of n, a(n) for n = 1..20054 (terms less than 2^30)</a> %o A369641 (PARI) \\ See A369640 %Y A369641 Setwise difference A341518 \ A158611. %Y A369641 Cf. A003415, A276086, A276156, A327859, A341517, A369640 (characteristic function). %Y A369641 Cf. A327978, A328243, A369642 (subsequences). %K A369641 nonn %O A369641 1,1 %A A369641 _Antti Karttunen_, Jan 31 2024