|Rounded or Bridged Polyominoes|
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Rounded Monomino - 1 (1 tile)
Rounded Dominos - 2 (4 tiles)
Rounded Trominos - 5 (15 tiles)
Rounded Tetrominos - 22 (88 tiles)
For higher orders of polyominoes, the number of pieces is as follows:
Rounded Pentominos - 99
Rounded Hexominos - 580
Rounded Heptominos - 3557
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