On Monday, he scored four points after intermission on 1-of-6 shooting.
This time the Sixers blew an 11-point third-quarter lead before the teams went into the fourth quarter tied at 69.
Richardson kept the Sixers in the game late by scoring nine consecutive points. He capped his scoring burst with a three-pointer to put the Sixers up 95-94 with 2:03 left.
However, Myles Turner responded with a pair of foul shots to put the Pacers up one with 1:17 remaining. Then Malcolm Brogdon added a foul shot with 32.3 seconds left make it a 97-95 game.
The Sixers called a timeout to draw up a play. However, the play ended with Tobias Harris getting his three-point attempt blocked by T.J. Warren.
Brogdon made a pair of foul shots on the ensuing possession before Domantas Sabonis split a pair with 11.9 seconds left to make it a 100-95 game.
the halfway point of the season for the Sixers. It was their 41st game out of an 82-game regular-season slate.
Before the game, Brown said the team is learning what its identity is going to be.
"I know what I want it to be," he said. "To say, 'yep, that's what it is,' that would not be true. It's changed even more now without Jo for a while."
Joel Embiid missed his second straight game Monday. The All-Star center, who is the team's leading scorer, had surgery Friday to repair a torn ligament in the ring finger of his left hand. The procedure typically requires a month of healing followed by several weeks of physical therapy, sports medicine specialists say.