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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.

A329894 Terms of A025487 from which the distance to the next larger prime is a composite number.

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%I A329894 #7 Dec 24 2019 17:31:40
%S A329894 512,16384,373248,393216,524288,1119744,4194304,4718592,5971968,
%T A329894 8388608,10077696,10616832,17915904,21233664,31104000,33554432,
%U A329894 35831808,42467328,47775744,56623104,67108864,150994944,159252480,286654464,322486272,362797056,679477248,859963392,1528823808,2176782336,2890137600,4294967296,5804752896,8748000000
%N A329894 Terms of A025487 from which the distance to the next larger prime is a composite number.
%C A329894 From the first 795641 terms of A025487 (terms that are in range 1 .. 2^101) only 4238 (~ 0.5 %) are included in this sequence.
%H A329894 Antti Karttunen, <a href="/A329894/b329894.txt">Table of n, a(n) for n = 1..4238</a>
%e A329894 As A151800(512) = 521, with 521 - 512 = 9 (a composite number), 512 is included in this sequence.
%o A329894 (PARI)
%o A329894 isc(n) = ((n > 1)&&!isprime(n));
%o A329894 for(n=1,2000,if(isc(nextprime(1+A025487(n))-A025487(n)),print1(A025487(n),", ")));
%Y A329894 Cf. A025487, A129912, A141345, A151800.
%K A329894 nonn
%O A329894 1,1
%A A329894 _Antti Karttunen_, Dec 24 2019