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.

A374591 Even numbers that can be written as the sum of two isolated primes (A007510).

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%I A374591 #19 Aug 10 2024 21:39:43
%S A374591 4,46,60,70,74,76,84,90,94,100,102,104,106,112,114,116,120,126,130,
%T A374591 132,134,136,142,144,146,150,154,156,158,160,162,164,166,168,172,174,
%U A374591 176,178,180,184,186,190,192,194,196,198,200,202,204,206,210,214,216,220
%N A374591 Even numbers that can be written as the sum of two isolated primes (A007510).
%e A374591 4 = 2 + 2 is a term, as 2 is the smallest isolated prime.
%e A374591 60 = 23 + 37 is the smallest term that is the sum of two distinct isolated primes.
%t A374591 Lim=220;ip=Select[Prime[Range[Lim]], NoneTrue[#+{2, -2}, PrimeQ]&] ;ipp[a_]:={a,a};Select[Union[Total/@Join[ipp/@ip,Subsets[ip,{2}]]],EvenQ[#]&&#<=Lim&] (* _James C. McMahon_, Aug 10 2024 *)
%Y A374591 Cf. A007510.
%K A374591 nonn
%O A374591 1,1
%A A374591 _Marc Groz_, Jul 12 2024