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.

A328467 Row 4 of A328464: a(n) = A276156(16n - 8) / 30.

This page as a plain text file.
%I A328467 #6 Oct 18 2019 21:28:34
%S A328467 1,8,78,85,1002,1009,1079,1086,17018,17025,17095,17102,18019,18026,
%T A328467 18096,18103,323324,323331,323401,323408,324325,324332,324402,324409,
%U A328467 340341,340348,340418,340425,341342,341349,341419,341426,7436430,7436437,7436507,7436514,7437431,7437438,7437508,7437515,7453447,7453454,7453524
%N A328467 Row 4 of A328464: a(n) = A276156(16n - 8) / 30.
%H A328467 Antti Karttunen, <a href="/A328467/b328467.txt">Table of n, a(n) for n = 1..8192</a>
%H A328467 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>
%F A328467 a(n) = (1/30) * A276156(16*n - 8).
%o A328467 (PARI)
%o A328467 A002110(n) = prod(i=1,n,prime(i));
%o A328467 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 A328467 A328467(n) = (A276156((16*n)-8) / 30);
%Y A328467 Row 4 of A328464.
%Y A328467 Cf. A002110, A276156, A328461.
%K A328467 nonn
%O A328467 1,2
%A A328467 _Antti Karttunen_, Oct 18 2019