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A209630 Numbers in A206853 without proper divisors > 1 from the same sequence. 0

%I

%S 1,2,7,11,13,31,47,59,61,127,191,223,239,251,895,991,1007,1019,1021,

%T 2047,3071,3583,3967,4031,4079,4091,4093,8191,15359,16127,16255,16319,

%U 16351,16375,16381,49151,63487,65279,65407,65519,65531,131071,196607,229375

%N Numbers in A206853 without proper divisors > 1 from the same sequence.

%C Composite terms are 895, 1007, 2047, 3071, 4031, 16255, 16351, 16375, 49151, 65279, 65531, 196607, 229375,...

%Y Cf. A206853.

%K nonn,base

%O 1,2

%A _Vladimir Shevelev_, Mar 13 2012

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Last modified April 14 12:11 EDT 2021. Contains 342949 sequences. (Running on oeis4.)