Search: id:A061742
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%I A061742
%S A061742 1,4,36,900,44100,5336100,901800900,260620460100,94083986096100,
%T A061742 49770428644836900,41856930490307832900,40224510201185827416900,
%U A061742 55067354465423397733736100,92568222856376731590410384100
%N A061742 Square of product of first n primes.
%C A061742 Squares of primorials (first definition).
%H A061742 Harry J. Smith, <a href="b061742.txt">Table of n, a(n) for n=0,...,100</
               a>
%e A061742 a(4) = 2^2 * 3^2 * 5^2 * 7^2 = 44100.
%t A061742 a[n_]:=Product[Prime[i]^2, {i, 1, n}]; [From Vladimir Orlovsky (4vladimir(AT)gmail.com), 
               Dec 05 2008]
%o A061742 (PARI) for(n=0,20,print(prod(k=1,n, prime(k)^2)))
%o A061742 (PARI) { n=-1; m=1; forprime (p=2, prime(101), write("b061742.txt", n++, 
               " ", m^2); m*=p ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), 
               Jul 27 2009]
%Y A061742 Equals A002110^2.
%Y A061742 Sequence in context: A009446 A134052 A127901 this_sequence A136469 A120605 
               A143764
%Y A061742 Adjacent sequences: A061739 A061740 A061741 this_sequence A061743 A061744 
               A061745
%K A061742 nonn
%O A061742 0,2
%A A061742 Jason Earls (zevi_35711(AT)yahoo.com), Jun 21 2001

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