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 A159034 #14 Jan 08 2020 09:44:20
%S A159034 2,7,170,16380,6710886,11453246035,80421421917330,2305843009213685760,
%T A159034 268650182136584261045760,126765060022822940149666965093,
%U A159034 241677817415439249618874010960062650,1858395433210885261794643189387357732203180,57560679870263253393868202642364377389525958615670
%N A159034 Inverse Euler transform of A155200.
%H A159034 Andrew Howroyd, <a href="/A159034/b159034.txt">Table of n, a(n) for n = 1..50</a>
%F A159034 a(n) = (1/n)*Sum_{d|n} 2^(d^2)*moebius(n/d).
%F A159034 a(n) ~ 2^(n^2) / n. - _Vaclav Kotesovec_, Oct 09 2019
%t A159034 Table[Sum[2^(d^2)*MoebiusMu[n/d], {d, Divisors[n]}]/n, {n, 1, 12}] (* _Vaclav Kotesovec_, Oct 09 2019 *)
%o A159034 (PARI) a(n)={sumdiv(n, d, 2^(d^2)*moebius(n/d))/n} \\ _Andrew Howroyd_, Jan 08 2020
%Y A159034 Cf. A155200.
%K A159034 easy,nonn
%O A159034 1,1
%A A159034 _Paul D. Hanna_, _Vladeta Jovovic_, Apr 02 2009
%E A159034 Terms a(12) and beyond from _Andrew Howroyd_, Jan 08 2020