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Ramanujan numbers (A000594) read mod 25.
4

%I #10 Feb 01 2017 08:07:22

%S 1,1,2,3,5,2,6,5,7,5,12,6,12,6,10,11,16,7,20,15,12,12,22,10,0,12,20,

%T 18,5,10,7,21,24,16,5,21,11,20,24,0,17,12,17,11,10,22,21,22,18,0,7,11,

%U 2,20,10,5,15,5,10,5,12,7,17,18,10,24,16,23,19,5,22,10,22,11,0,10,22,24,5,5

%N Ramanujan numbers (A000594) read mod 25.

%D H. P. F. Swinnerton-Dyer, On l-adic representations and congruences for coefficients, of modular forms, pp. 1-55 of Modular Functions of One Variable III (Antwerp 1972), Lect. Notes Math., 350, 1973.

%H Seiichi Manyama, <a href="/A126833/b126833.txt">Table of n, a(n) for n = 1..10000</a>

%Y Cf. A000594, A126832 (mod 5^1), this sequence (mod 5^2), A126834 (mod 5^3), A126835 (mod 5^4).

%K nonn

%O 1,3

%A _N. J. A. Sloane_, Feb 25 2007