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@article{150954,
        author = {Dr.S.USHA},
        title = {On Heptagonal Numbers},
        journal = {International Journal of Innovative Research in Technology},
        year = {},
        volume = {7},
        number = {11},
        pages = {86-88},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=150954},
        abstract = {},
        keywords = {nfinite pairs of heptagonal number,the rank of square heptagonal numbers,square-free integer.},
        month = {},
        }