[ESubsup (ESymbol Op "\8747") (ENumber "0") (ENumber "1"),ESuper (EIdentifier "x") (EIdentifier "x"),ESpace (1 % 6),EStyled TextNormal [EIdentifier "d"],EIdentifier "x",ESymbol Rel "=",EUnderover True (ESymbol Op "\8721") (EGrouped [EIdentifier "n",ESymbol Rel "=",ENumber "1"]) (ESymbol Ord "\8734"),EGrouped [ESymbol Open "(",ESymbol Bin "\8722",ENumber "1",ESuper (ESymbol Close ")") (EGrouped [EIdentifier "n",ESymbol Bin "+",ENumber "1"]),ESpace (1 % 6),ESuper (EIdentifier "n") (EGrouped [ESymbol Bin "\8722",EIdentifier "n"])]]