asciiTable
=LAMBDA(i,
    justifyRight(3)(" ")(i) & ": " & (
        justifyRight(
           3
        )(" ")(
            IF(32 = i,
                "Spc",
                IF(127 = i,
                    "Del",
                    CHAR(i)
                )
            )
        )
    )
)(
    SEQUENCE(16, 6, 32, 1)
)