@article{ZNSL_2012_403_a5,
     author = {A. A. Lodkin and I. E. Manaev and A. R. Minabutdinov},
     title = {A realization of the {Pascal} automorphism in the concatenation graph, and the function~$s_2(n)$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {95--102},
     publisher = {mathdoc},
     volume = {403},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2012_403_a5/}
}