Targum for Genesis 5:3

And Adam lived a hundred and thirty years, and begat Sheth, who had the likeness of his image and of his similitude: for before had Hava born Kain, who was not like to him; and Habel was killed by his hand. And Kain was cast out; neither is his seed genealogized in the book of the genealogy of Adam. But afterwards there was born one like him, and he called his name Sheth.