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A071170 n-th prime reduced modulo sigma(n). 2

%I

%S 0,0,1,0,5,1,1,4,10,11,7,9,13,19,23,22,5,22,7,29,9,7,11,29,4,17,23,51,

%T 19,41,31,5,41,31,5,60,5,43,55,83,11,85,15,25,41,55,19,99,56,43,17,43,

%U 25,11,41,23,29,1,37,113,35,5,99,57,61,29,59,85,59,61,65,164,71,31,7

%N n-th prime reduced modulo sigma(n).

%F a(n) = Mod(prime(n), sigma(n)) = Mod(A000040(n), A000203(n)).

%e n=25,p(25)=97, sigma(25)=31, Mod[97,31]=4=a[25]

%t Table[Mod[Prime[w], DivisorSigma[1, w]], {w, 1, 128}]

%Y Cf. A000040, A000203, A067696, A067697.

%K nonn

%O 1,5

%A _Labos Elemer_, May 15 2002

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Last modified September 19 15:37 EDT 2021. Contains 347564 sequences. (Running on oeis4.)