cp's OEIS Frontend

A383303 Numbers k such that A276086(A276086(k)) is a multiple of A276086(A003415(k)), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.

%I A383303 #6 May 15 2025 17:11:40
%S A383303 0,1,2,6,8,10,14,22,26,28,40,50,56,58,62,68,72,74,82,86,91,92,94,95,
%T A383303 102,118,122,124,134,136,142,144,146,155,160,174,178,185,194,196,202,
%U A383303 206,208,215,217,220,221,225,236,246,247,253,259,268,270,272,280,282,290,295,296,300,302,305,318,330,335,340,344
%N A383303 Numbers k such that A276086(A276086(k)) is a multiple of A276086(A003415(k)), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.
%H A383303 Antti Karttunen, <a href="/A383303/b383303.txt">Table of n, a(n) for n = 1..20000</a>
%H A383303 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>.
%o A383303 (PARI) isA383303 = A383302;
%Y A383303 Cf. A003415, A276086, A276087, A327859, A383302 (characteristic function), A383933 (subsequence).
%Y A383303 Cf. also A383299.
%K A383303 nonn
%O A383303 1,3
%A A383303 _Antti Karttunen_, May 15 2025