@article{MZ_1939__44_168790,
     author = {R., Sprague},
     title = {Bemerkungen \"uber gewisse {Zahlfolgen}},
     journal = {Mathematische Zeitschrift},
     pages = {20--22},
     year = {1939},
     volume = {44},
     zbl = {64.0148.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1939__44_168790/}
}