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Bell numbers (A000110) read mod 10.
7

%I #13 Sep 08 2022 08:45:38

%S 1,1,2,5,5,2,3,7,0,7,5,0,7,7,2,5,7,4,9,7,2,1,3,6,9,3,4,9,5,2,7,3,4,7,

%T 9,0,7,1,6,9,7,8,7,5,6,5,5,2,1,1,0,7,3,2,1,7,0,5,3,8,7,5,8,1,5,2,3,9,

%U 6,7,5,2,5,3,2,7,7,8,5,9,4,5,3,4,3,9,8,7,7,2,7,5,4,9,9,2,9,3,8,1,1,2,1,9,2

%N Bell numbers (A000110) read mod 10.

%H G. C. Greubel, <a href="/A146100/b146100.txt">Table of n, a(n) for n = 0..10000</a>

%H W. F. Lunnon, P. A. B. Pleasants, and N. M. Stephens, <a href="http://matwbn.icm.edu.pl/ksiazki/aa/aa35/aa3511.pdf">Arithmetic properties of Bell numbers to a composite modulus I</a>, Acta Arithmetica 35 (1979), pp. 1-16.

%t Mod[BellB[Range[0, 100]], 10] (* _G. C. Greubel_, Jan 31 2016 *)

%o (Magma) [Bell(n) mod 10: n in [0..100]]; // _Vincenzo Librandi_, Feb 01 2016

%Y Cf. A000110, A146097, A146098, A146099, A146101, A146102, A146103.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Feb 07 2009