Search: id:A129749
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%I A129749
%S A129749 1,8,32,44,577,5066,5669,8615,39787,59689,109752,146328,15451380,
%T A129749 22173220,28558717,332573533,1837410366,3289933379,19053646133
%N A129749 Numbers n that divide the sum of the first n nonprimes.
%C A129749 A variant of A045345 and A053781.
%e A129749 The sum of the first 44 nonprimes is 1452 = 33*44.
%p A129749 np:=proc(j) if isprime(j)=false then j else fi end: NP:=[seq(np(j),j=1..50000)]: 
               a:=proc(n) if type(add(NP[j],j=1..n)/n,integer)=true then n else 
               fi end: seq(a(n),n=1..nops(NP)); - Emeric Deutsch (deutsch(AT)duke.poly.edu), 
               May 16 2007
%Y A129749 Cf. A045345 (n divides sum of first n primes), A053781 (n divides sum 
               of first n composites), A018252 (nonprimes), A051349 (sum of first 
               n nonprimes).
%Y A129749 Sequence in context: A059880 A144096 A127988 this_sequence A005879 A067519 
               A009245
%Y A129749 Adjacent sequences: A129746 A129747 A129748 this_sequence A129750 A129751 
               A129752
%K A129749 nonn,more
%O A129749 1,2
%A A129749 J. M. Bergot (thekingfishb(AT)yahoo.ca), May 14 2007
%E A129749 Edited and a(5) to a(18) added by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 
               May 17 2007
%E A129749 a(19) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Sep 19 2009

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