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.
%I A328465 #6 Oct 18 2019 21:29:02
%S A328465 1,4,16,19,106,109,121,124,1156,1159,1171,1174,1261,1264,1276,1279,
%T A328465 15016,15019,15031,15034,15121,15124,15136,15139,16171,16174,16186,
%U A328465 16189,16276,16279,16291,16294,255256,255259,255271,255274,255361,255364,255376,255379,256411,256414,256426,256429,256516,256519,256531
%N A328465 Row 2 of A328464: a(n) = A276156(4n - 2) / 2.
%H A328465 Antti Karttunen, <a href="/A328465/b328465.txt">Table of n, a(n) for n = 1..8192</a>
%H A328465 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>
%F A328465 a(n) = (1/2) * A276156(4*n - 2).
%o A328465 (PARI)
%o A328465 A002110(n) = prod(i=1,n,prime(i));
%o A328465 A276156(n) = { my(p=2,pr=1,s=0); while(n,if(n%2,s += pr); n >>= 1; pr *= p; p = nextprime(1+p)); (s); };
%o A328465 A328465(n) = (A276156((4*n)-2) / 2);
%Y A328465 Row 2 of A328464.
%Y A328465 Cf. A002110, A276156, A328461, A328462, A328466, A328467, A328468.
%K A328465 nonn
%O A328465 1,2
%A A328465 _Antti Karttunen_, Oct 18 2019