Butterscotch Caramel Cheesecake without cream

1 3/4 cups finely crushed graham cracker crumbs 1/3 cup butter , melted 1/4 cup granulated sugar 1/4 cup finely chopped pecans 1 Preheat oven to 325 degrees.[...]

12 tablespoons unsalted butter (1 1/2 sticks) 1 cup dark brown sugar 5 cups heavy cream 1 tablespoon fine sea salt 1 vanilla bean , seeds scraped 6 large egg[...]