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Numbers k for which A327860(k) is of the form 4m+2, where A327860 is the arithmetic derivative of the primorial base exp-function.
2

%I #5 Jan 20 2024 13:52:07

%S 4,12,20,28,32,40,48,56,60,68,76,84,96,104,112,124,132,140,148,152,

%T 160,168,176,180,188,196,204,212,220,228,236,240,248,256,264,276,284,

%U 292,304,312,320,328,332,340,348,356,360,368,376,384,396,404,412,420,428,436,444,456,464,472,484,492,500,508,512,520

%N Numbers k for which A327860(k) is of the form 4m+2, where A327860 is the arithmetic derivative of the primorial base exp-function.

%H <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>

%o (PARI) \\ See A369036.

%Y Cf. A327860, A369036 (characteristic function).

%Y Setwise difference A008586 \ A369035.

%Y Positions of 2's in A353630.

%K nonn

%O 1,1

%A _Antti Karttunen_, Jan 20 2024