cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A364001 Primes of the form |2^i - 3^j|, i >= 1, j >= 1.

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%I A364001 #10 Sep 04 2023 12:46:22
%S A364001 5,7,11,13,17,19,23,29,37,47,61,73,79,101,139,179,211,227,229,239,241,
%T A364001 269,431,503,509,601,727,997,1021,1163,1319,1931,2039,2179,3299,3853,
%U A364001 4093,4513,6529,6553,7949,8111,11491,14197,16141,16381,19427,19681,32687
%N A364001 Primes of the form |2^i - 3^j|, i >= 1, j >= 1.
%t A364001 z = 500;
%t A364001 t = Table[Abs[2^i - 3^j], {i, 1, z}, {j, 1, z}];
%t A364001 u = Sort[Flatten[t]];
%t A364001 v = Union[u] ; (* A363999 *)
%t A364001 w = (v - 1)/2 ;  (* A364000 *)
%t A364001 Intersection[v, Prime[Range[200000]]]  (* this sequence *)
%Y A364001 Cf. A014121, A192110, A192111, A363998.
%K A364001 nonn
%O A364001 1,1
%A A364001 _Clark Kimberling_, Aug 09 2023