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 A007316 M0895 #26 Oct 05 2022 04:58:43 %S A007316 1,-1,1,-2,3,-9,9,-71,-96,-1325,-6843,-54922,-417975,-3586117, %T A007316 -32531983,-316599861,-3274076017,-35914014266,-416386323306, %U A007316 -5088908019824,-65392831090975,-881473287321301,-12437647407521019,-183345613125389337 %N A007316 Reversion of g.f. for Euler numbers A000111(n-1). %D A007316 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A007316 <a href="/index/Res#revert">Index entries for reversions of series</a> %p A007316 # Using function CompInv from A357588. %p A007316 CompInv(24, n -> if n=1 then 1 else 2^(n-1)*abs(euler(n-1, 1/2) + euler(n-1, 1)) fi); # _Peter Luschny_, Oct 05 2022 %Y A007316 Cf. A000111. %K A007316 sign %O A007316 1,4 %A A007316 _N. J. A. Sloane_, _Mira Bernstein_ %E A007316 Extended with signs by _Christian G. Bower_, Feb 15 1999 %E A007316 Signs and a(23) and a(24) corrected by _Sean A. Irvine_, Dec 08 2017