I do this routine w/ a 15 lb. I posted the first and last set, but the full workout is described below.
Squats x 50/Hindu Push-ups x 25
Squats x 40/Hindu Push-ups x 20
Squats x 30/Hindu Push-ups x 15
Squats x 20/Hindu Push-ups x 10
Squats x 10/Hindu Push-ups x 5