[tex]a_{n} = n^{2}+1\\\\\\a_1=1^{2}+1 = 1+1 = 2\\\\a_2 = 2^{2}+1 = 4+1 = 5\\\\a_3 = 3^{2}+1 = 9+1 = 10\\\\a_4 = 4^{2}+1 = 16+1 = 17[/tex]
