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 A384855 #11 Jun 11 2025 10:11:40 %S A384855 1,1,7,10,-503,-8564,-103751,3479554,327940225,8613464536, %T A384855 -36391967279,-24834942253274,-2356662167845487,-88482481533921500, %U A384855 1825569695231959993,704791058412273699106,88829364712362626504449,5460031123686211024338736,23871425875449192877470625 %N A384855 E.g.f. A(x) satisfies A(x) = exp( x/A(-x*A(x))^3 ). %F A384855 See A384859. %o A384855 (PARI) a(n, k=-1) = if(n*k==0, 0^n, (-1)^n*k*sum(j=1, n, (-n+j+k)^(j-1)*binomial(n, j)*a(n-j, 3*j))); %Y A384855 Column k=1 of A384859. %Y A384855 Cf. A052752, A213112, A213113, A384856, A384857, A384858. %Y A384855 Cf. A213108, A384617. %K A384855 sign %O A384855 0,3 %A A384855 _Seiichi Manyama_, Jun 10 2025