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A097013 Smallest x such that sigma(x) mod 30 = n. 3

%I #7 Dec 19 2013 03:28:36

%S 24,1,21,2,3,923521,5,4,7,18,27,2401,6,9,13,8,217,9604,10,1089,19,98,

%T 91,21609,14,14641,28,49,12,2614689

%N Smallest x such that sigma(x) mod 30 = n.

%C Compare with A084303.

%C Row 30 of A074625 (apart from different ordering). - _Michel Marcus_, Dec 19 2013

%t t=Table[Mod[DivisorSigma[1, w], 30], {w, 1, 2700000}]; Table[Min[Flatten[Position[t, j]]], {j, 0, 29}]

%Y Cf. A000203, A084301, A084303, A097011, A097012, A097014, A097015.

%K fini,full,nonn

%O 0,1

%A _Labos Elemer_, Aug 19 2004

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Last modified July 23 09:01 EDT 2024. Contains 374547 sequences. (Running on oeis4.)