1–10, 12–17, 20–35, 38–41, 43–46, 48–50, 52–71, 72–88, 89–95, 97–108, 110–118, 121–126, 128–130, 133–141, 143–151, 176–180, 182–191, 194–206, 207–212, 214–220, 222, 243–245, 247, 249–255, 257–261, 263–269, 271–295 (skip 279, 281, 284, 287, 288, 290, 291), then 396–462.
Here is the list of (without filler) organized by arcs, so you can watch only the essential story episodes.