As character names:

U+1F781 BLACK UP-POINTING ISOSCELES RIGHT TRIANGLE character (🞁)

As raw characters:

🞁

As a string of HTML entities:

🞁

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 158, hex 0x9E, octal \236, binary 10011110
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 129, hex 0x81, octal \201, binary 10000001
This is continuation byte 3, expecting 0 more.

U+1F781	BLACK UP-POINTING ISOSCELES RIGHT TRIANGLE
	x (black medium up-pointing triangle - 23F6)