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 A377329 #5 Oct 25 2024 09:29:37 %S A377329 1,1,9,164,4590,174364,8388634,489088592,33523741560,2642134225416, %T A377329 235430782725744,23405320602599616,2568397523286868080, %U A377329 308376740778642665856,40213392368801846121792,5659917793199595766848000,855188706536492203489860480,138068648223418996408877210496 %N A377329 E.g.f. satisfies A(x) = 1 - A(x)^2 * log(1 - x*A(x)^2). %F A377329 a(n) = Sum_{k=0..n} (2*n+2*k)!/(2*n+k+1)! * |Stirling1(n,k)|. %o A377329 (PARI) a(n) = sum(k=0, n, (2*n+2*k)!/(2*n+k+1)!*abs(stirling(n, k, 1))); %Y A377329 Cf. A365438, A367080, A367138. %K A377329 nonn %O A377329 0,3 %A A377329 _Seiichi Manyama_, Oct 25 2024