This info is from La Leche League:
While the amount and frequency of a breastfed baby's wet diapers and bowel movements can be a valuable indicator of his well-being, there is a wide range of normal in infant stooling patterns.
The First Few Days of Life
In the first two or three days of life, it would be typical for a baby to wet only one or two diapers per day. As the mother's milk increases, his urine output will increase markedly. Newborns in the first few days after birth will pass dark, tarry stools called meconium, the substance he has stored since before birth. As the baby receives milk, it clears the meconium out of the intestinal tract, so that within a few days the stools will become softer and much lighter in color. The stools are normally yellow, yellow-green or tan. It's not abnormal for an occasional stool to be green. The odor should be mild, and not particularly unpleasant. The consistency may be described as being similar to scrambled eggs, custard, pea soup, or even prepared mustard. There are often small, seedy-looking solid particles in the stool.
The First Six Weeks
Most babies, after the first few days, have two to five bowel movements every 24 hours, until they are about six weeks old. The stools should be as large as a US quarter to "count" in this number. Some babies will have more frequent bowel movements, and it is possible for a healthy baby to have fewer bowel movements. If a baby younger than six weeks has fewer than two bowel movements a day, that can still be a variation of normal provided that the baby has an adequate number of wet diapers, is known to be gaining weight at an adequate rate, and the stools produced are substantial in volume.
After the first few days, a breastfed baby should have at least six to eight wet cloth diapers, or five to six disposables, in 24 hours. To gauge the wetness, pour 2-4 tablespoons (30-60 ml) of water on a dry diaper. This is how the normally wet diaper of a young baby feels. It is easier to judge wetness in cloth diapers. If you are using disposables, know that there is a wide variation in brands and types. One brand may not "feel wet" while another may feel soaked with the same amount of fluid. It may be helpful to place a facial tissue inside the diaper to help judge wetness.