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%I #5 Feb 05 2024 18:07:33
%S 6,10,22,27,30,34,42,50,58,66,70,78,82,86,99,105,114,118,122,125,126,
%T 130,142,146,154,165,174,182,194,202,206,207,214,222,230,231,238,242,
%U 243,246,250,255,273,274,279,282,285,286,298,302,310,318,326,333,343,345,346,357,358,366,369,370,374,382,385,386
%N Numbers k such that k' is odd and also k'' is odd, where k' stands for the arithmetic derivative of k, A003415(k).
%C Numbers k that are in A235991 and also A003415(k) is in A235991.
%o (PARI) \\ See A369655.
%Y Cf. A000035, A003415, A068346, A235991, A351228, A369655 (characteristic function).
%K nonn
%O 1,1
%A _Antti Karttunen_, Feb 05 2024
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