Unless the transfer to you involved a life estate, there doesn't seem to be any inheritance in what you have described. It appears that your father gifted the house to you subject to gift tax requirements, your sale of the house is taxable income to you to the extent that the sales proceeds exceed the cost basis your father had in the house (which became your cost basis upon gifting the house to you), you do not meet the residency test to allow you to exclude any of the gain from taxation on your tax return, and any money that you give to your siblings will be gifts from you to your siblings subject to gift tax requirements.
