@article{10_14708_cm_v5i1_5462,
     author = {A. Rotkiewicz},
     title = {O liczbach postaci: \(\frac{(4k+1)^{4k + 1}-1}{4k},\ \frac{(4k + 3)^{4k+3}+1}{4k+4}\)},
     journal = {Commentationes Mathematicae},
     pages = { 95--99},
     year = {1961},
     volume = {5},
     number = {1},
     doi = {10.14708/cm.v5i1.5462},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v5i1.5462/}
}