The last digit of 2nn and ∑ni2n-2in-1.
Shur, Walter
The Electronic Journal of Combinatorics [electronic only], Tome 4 (1997), / Harvested from The Electronic Library of Mathematics
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Publié le : 1997-01-01
EUDML-ID : urn:eudml:doc:119228 
@article{01118082,
     title = {The last digit of },
     journal = {The Electronic Journal of Combinatorics [electronic only]},
     volume = {4},
     year = {1997},
     zbl = {0885.05003},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01118082}
}

Shur, Walter. The last digit of . The Electronic Journal of Combinatorics [electronic only], Tome 4 (1997) . http://gdmltest.u-ga.fr/item/01118082/