author = {Manuel Kauers and Sheng-Lan Ko},
title = {{Problem 11545}},
language = {english},
isbn_issn = {ISSN 0192-5857},
year = {2011},
month = {1},
translation = {0},
refereed = {yes},
howpublished = {American Mathematical Monthly 118(1):84},
length = {1}