Which number follows the pattern?

The pattern starts with 1. The next number $1 + \color{#D61F06}{1^2} = 2$ . The next number $2 + \color{#D61F06}{2^2} = 6$ . The next number $6 + \color{#D61F06}{3^2} = 15$ . The next number $15 + \color{#D61F06}{4^2} = 31$ . The next number $31 + \color{#D61F06}{5^2} = 56$ . The next number $56 + \color{#D61F06}{6^2} = 92$ . ,So, we see the next number is obtained by consecutively adding the successive square to the previous number. So, the answer is $92 + \color{#D61F06}{7^2} = 92 + 49 = \color{#69047E}{\boxed{141}}$ .