Search: id:A083520
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%I A083520
%S A083520 3,7,13,31,43,61,73,157,211,241,307,337,421,463,601,757,991,1123,1321,
%T A083520 1483,1723,2521,2551,2731,2971,3307,3361,3541,3907,4423,4831,5113,5701,
%U A083520 6007,6163,6481,6841,8011,8191,9241,9901,10303,10627,11131,12211,12433
%N A083520 Primes p such that p-1 is a product of two or more consecutive integers. 
               Or (p-1) is a permutation of m items chosen from n, for some m and 
               n. p-1 = k*(k+1)(k+2)...(k+r) for some k and r, r>0.
%e A083520 61 belongs to this sequence as 60 = 3*4*5, 73 belongs to this sequence 
               as 72 = 8*9.
%Y A083520 Cf. A083521.
%Y A083520 Cf. A002383.
%Y A083520 Sequence in context: A105435 A117708 A093431 this_sequence A162869 A079018 
               A002383
%Y A083520 Adjacent sequences: A083517 A083518 A083519 this_sequence A083521 A083522 
               A083523
%K A083520 nonn
%O A083520 1,1
%A A083520 Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), 
               May 05 2003
%E A083520 More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Nov 19 
               2004

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