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 A384803 #9 Jun 10 2025 12:53:24 %S A384803 1,1,3,28,365,7456,198967,6600448,260641817,11805179392,603174969611, %T A384803 34119591645184,2107808150141509,140656454965522432, %U A384803 10045467848093258687,762717885873201995776,61259933997939643876913,5188866020593647457533952,463236056771875012276202899 %N A384803 E.g.f. A(x) satisfies A(x) = exp( x/A(-x*A(x)^4) ). %F A384803 See A384804. %o A384803 (PARI) a(n, k=-1) = if(n*k==0, 0^n, (-1)^n*k*sum(j=1, n, (-4*n+4*j+k)^(j-1)*binomial(n, j)*a(n-j, j))); %Y A384803 Column k=1 of A384804. %Y A384803 Cf. A213108, A213109. %K A384803 nonn %O A384803 0,3 %A A384803 _Seiichi Manyama_, Jun 10 2025