As character names:

U+1E5E LATIN CAPITAL LETTER R WITH LINE BELOW character (Ṟ)

As raw characters:

Ṟ

As a string of HTML entities:

Ṟ

Decoder output:

Byte number 1 is decimal 225, hex 0xE1, octal \341, binary 11100001
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 158, hex 0x9E, octal \236, binary 10011110
This is continuation byte 2, expecting 0 more.

U+1E5E	LATIN CAPITAL LETTER R WITH LINE BELOW
	: 0052 0331