Søren Eilers. The LEGO Counting Problem. The American Mathematical Monthly, 123(5):415-426, 2016. [doi]
@article{Eilers16,
title = {The LEGO Counting Problem},
author = {Søren Eilers},
year = {2016},
url = {https://www.tandfonline.com/doi/abs/10.4169/amer.math.monthly.123.5.415},
researchr = {https://researchr.org/publication/Eilers16},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {123},
number = {5},
pages = {415-426},
}