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 A014346 #10 Jul 08 2025 05:36:54 %S A014346 2,6,19,59,181,541,1583,4455,12213,32113,82631,206709,510681,1245343, %T A014346 3004575,7200705,17049021,40140981,93678375,216274577,496470625, %U A014346 1128356231,2544413119,5704402931,12712869673,28191681427,62282778949,137195275297,300840332783 %N A014346 Exponential convolution of primes with themselves (divided by 2). %H A014346 Alois P. Heinz, <a href="/A014346/b014346.txt">Table of n, a(n) for n = 0..1000</a> %F A014346 a(n) = A014345(n)/2. %Y A014346 Cf. A014345. %K A014346 nonn %O A014346 0,1 %A A014346 _N. J. A. Sloane_