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 A180129 #6 Jan 05 2020 05:36:44 %S A180129 1,5,16,49,136,380,1016,2745,7369,19840,53395,143620,386374,1039386, %T A180129 2796001,7521561,20233860,54431237,146425762,393900764,1059634634, %U A180129 2850529093,7668224519,20628334404,55492399461,149280418500,401580100348,1080292905482,2906102072179,7817721667285 %N A180129 Expansion of log(1/(1-Prime(x))) where Prime(x) = Sum{n>=1} A008578(n)*x^n. %H A180129 Andrew Howroyd, <a href="/A180129/b180129.txt">Table of n, a(n) for n = 1..200</a> %F A180129 Logarithm g.f.: Sum_{n>0} a(n)*x^n/n = log(1/(1-Prime(x))). %F A180129 Logarithmic derivative of A300662. - _Andrew Howroyd_, Jan 04 2020 %o A180129 (PARI) seq(n)={Vec(deriv(log(1/(1 - x - x*sum(k=1, n-1, prime(k)*x^k, O(x^n))))))} \\ _Andrew Howroyd_, Jan 04 2020 %Y A180129 Cf. A008578, A300662. %K A180129 nonn %O A180129 1,2 %A A180129 _Vladimir Kruchinin_, Aug 12 2010 %E A180129 Terms a(16) and beyond from _Andrew Howroyd_, Jan 04 2020