1λΆ€ν„° μ‹œμž‘ν•˜λŠ” μ—°μ†λœ ν™€μˆ˜μ˜ ν•©

1λΆ€ν„° μ‹œμž‘ν•˜λŠ” μ—°μ†λœ ν™€μˆ˜ n개의 ν•©: $n^2$개

ex)$1=1^2$
$1+3 = 2^2$
$1+3+5 = 3^2$