Geodesic
On a problem of Bednarek
Communications in Mathematics, Tome 20 (2012) no. 2, pp. 79-80
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We answer a question of Bednarek proposed at the 9th Polish, Slovak and Czech conference in Number Theory.
We answer a question of Bednarek proposed at the 9th Polish, Slovak and Czech conference in Number Theory.
Classification : 11A63
Keywords: sum of digits 
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Luca, Florian. On a problem of Bednarek. Communications in Mathematics, Tome 20 (2012) no. 2, pp. 79-80. http://geodesic.mathdoc.fr/item/COMIM_2012_20_2_a1/

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[3] Sun, Z.-W.: On divisibility concerning binomial coefficients. J. Austral. Math. Soc., in press, arXiv:1005.1054.