A370123 - OEIS

%I #6 Feb 10 2024 18:53:47

%S 0,1,2,3,5,7,11,13,14,15,17,19,23,24,27,29,31,33,37,40,41,43,47,48,49,

%T 50,51,53,54,56,59,60,61,65,67,68,69,71,73,77,79,81,83,86,89,91,97,98,

%U 101,103,104,107,108,109,113,122,123,127,131,132,133,135,136,137,139,140,141,149,150,151,152,155,157,158

%N Numbers whose second arithmetic derivative (A068346) is a multiple of 3.

%o (PARI) \\ See A370122.

%Y Cf. A068346, A370119 (subsequence), A370122 (characteristic function).

%K nonn

%O 1,3

%A _Antti Karttunen_, Feb 10 2024