Tony Lewis, of Duckworth and Lewis, has emailed giving us the correct permutation. A newer version of the software was implemented for this tournament, which Tony has. Per the new WinCODA2 software being used by Tony and the scorers in South Africa, India's target will be 266 in 42 overs, and 166 for 20 overs. Thanks for that Tony. Appreciated. And no, this system apparently does not take into consideration Powerplays.
166 in 20 now, not 153.