You can have many different experiences with your undergraduate math concentration. Here are some suggestions for how you might focus on various sub-topics as you go though the concentration. These aren't meant to be exhaustive lists of classes you should take, just recommendations for certain classes you might take in order to enhance your experience in a certain direction.
Year 1: 180 or 200 or 350, 520 or 540, maybe 1000 (fka 1001). (This is the same for all of the options.)
If you don't take either 350 or 540, you might want to shop 1000 (fka 1001) or 1010 before venturing into heavily proof based courses.
Broad Interest Suggestions
Year 2: 1530, 1110, 1460 (fka 1260), 1030 (fka 1230)
Year 3: 1540, 1060, 1710 (fka 1410), 1080 (fka 1580)
Year 4: 1630 (fka 1130), 1040, 1560, 1270
Algebra Suggestions
Year 2: 1530-1540
Year 3: 1560, 1080 (fka 1580)
Year 4: 2510-2520, 2050
Geometry-Topology Suggestions
Year 2: 1010, 1040, 1060
Year 3: 1710 (fka 1410), 1040, 1640 (fka 1140) maybe 1630 (fka 1130)
Year 4: 2410, 2120, 2010
Probability Suggestions
Year 2: 1110-1120, 1010, 1460 (fka 1260)
Year 3: 1210-1220 (fka 1610-1620)
Year 4: 2210, 2630-2640, maybe 2220
Analysis/PDE Suggestions
Year 2: 1010, 1530, 1110
Year 3: 1630 (fka 1130), 1640 (fka 1140), 1460 (fka 1260), 1120
Year 4: 1270, 2210-2220 or 2250-2260
Grad Prep Suggestions
Year 2: 1530-1540, 1630-1640 (fka 1130-1140), 1460 (fka 1260)
Year 3: 1560, 1710 (fka 1410), 1060, maybe 2110, 2510-2520
Year 4 2410, 2210-2220, 2510-2520, 2250, 2110