Integer both Square and Triangular/Examples

Examples of Integer both Square and Triangular
The following integers are both square and triangular:
 * {| border="1"

! align="right" style = "padding: 2px 10px" | $n$ ! align="right" style = "padding: 2px 10px" | $\dfrac {k \paren {k + 1} } 2$ ! align="right" style = "padding: 2px 10px" | $m^2$ ! align="right" style = "padding: 2px 10px" | $a b = m$ ! align="right" style = "padding: 2px 10px" | $\dfrac a b$
 * align="right" style = "padding: 2px 10px" | $1$
 * align="right" style = "padding: 2px 10px" | $\dfrac {1 \paren {1 + 1} } 2$
 * align="right" style = "padding: 2px 10px" | $1^2$
 * align="right" style = "padding: 2px 10px" | $1 \times 1$
 * align="right" style = "padding: 2px 10px" | $1$
 * align="right" style = "padding: 2px 10px" | $36$
 * align="right" style = "padding: 2px 10px" | $\dfrac {8 \paren {8 + 1} } 2$
 * align="right" style = "padding: 2px 10px" | $6^2$
 * align="right" style = "padding: 2px 10px" | $3 \times 2$
 * align="right" style = "padding: 2px 10px" | $1 \cdotp 5$
 * align="right" style = "padding: 2px 10px" | $1225$
 * align="right" style = "padding: 2px 10px" | $\dfrac {49 \paren {49 + 1} } 2$
 * align="right" style = "padding: 2px 10px" | $35^2$
 * align="right" style = "padding: 2px 10px" | $7 \times 5$
 * align="right" style = "padding: 2px 10px" | $1 \cdotp 4$
 * align="right" style = "padding: 2px 10px" | $41 \, 616$
 * align="right" style = "padding: 2px 10px" | $\dfrac {288 \paren {288 + 1} } 2$
 * align="right" style = "padding: 2px 10px" | $204^2$
 * align="right" style = "padding: 2px 10px" | $17 \times 12$
 * align="right" style = "padding: 2px 10px" | $1 \cdotp 41 \dot 6$
 * }
 * align="right" style = "padding: 2px 10px" | $204^2$
 * align="right" style = "padding: 2px 10px" | $17 \times 12$
 * align="right" style = "padding: 2px 10px" | $1 \cdotp 41 \dot 6$
 * }