<Tr> <Td_colspan="2"> <Table> <Tr> <Td> </Td> <Td> 2018 Ohio State Buckeyes football team </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> </Td> <Td> 2018 Ohio State Buckeyes football team </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> 2018 Ohio State Buckeyes football team </Td> </Tr> <Tr> <Th> First season </Th> <Td> 1890 </Td> </Tr>

How many times has ohio state won the national championship