Search: id:A099498
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%I A099498
%S A099498 7849,3667649,91171007,2395420006033,11877172892329028459041,
%T A099498 604107995057426434824791,107174878415004743976428761769,
%U A099498 424678439961073471604787362241217
%N A099498 Semiprimes of the form A007925(n)=n^(n+1)-(n+1)^n.
%e A099498 a(1)=7849 because 5^6-6^5=7849=47*167 is a semiprime.
%Y A099498 Cf. A007925 n^(n+1)-(n+1)^n, A072179 n^(n+1)-(n+1)^n is prime, A099499 
               primes of the form n^(n+1)-(n+1)^n, A099497 n^(n+1)-(n+1)^n is a 
               semiprime.
%Y A099498 Sequence in context: A017597 A043520 A045277 this_sequence A045292 A115426 
               A155178
%Y A099498 Adjacent sequences: A099495 A099496 A099497 this_sequence A099499 A099500 
               A099501
%K A099498 nonn
%O A099498 1,1
%A A099498 Hugo Pfoertner (hugo(AT)pfoertner.org), Oct 19 2004

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