Onan died in # 01_GEN_46_12 # And the sons of Judah; Er, and Onan, and Shelah, and Pharez, and Zarah: but Er and Onan died in the land of Canaan. And the sons of Pharez were Hezron and Hamul. 
Onan died in # 04_NUM_26_19 # The sons of Judah [were] Er and Onan: and Er and Onan died in the land of Canaan.