Search: id:A061762
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%I A061762
%S A061762 0,2,4,6,8,10,12,14,16,18,1,3,5,7,9,11,13,15,17,19,2,5,8,11,14,17,20,
%T A061762 23,26,29,3,7,11,15,19,23,27,31,35,39,4,9,14,19,24,29,34,39,44,49,5,11,
%U A061762 17,23,29,35,41,47,53,59,6,13,20,27,34,41,48,55,62,69,7,15,23,31,39,47
%N A061762 a(n) = (sum of digits of n) + (product of digits of n).
%D A061762 S. Parmeswaran, S+P numbers, Mathematics Informatics Quarterly, Vol. 
               9, No. 3 Sep. 1999, Bulgaria.
%H A061762 Harry J. Smith, <a href="b061762.txt">Table of n, a(n) for n=0,...,1000</
               a>
%H A061762 Matthew M. Conroy, <a href="http://www.madandmoonly.com/doctormatt">Home 
               page</a> (listed instead of email address)
%e A061762 a(14) = 1+4 + 1*4 = 9.
%o A061762 (PARI) SumD(x)= { s=0; while (x>9, s=s+x-10*(x\10); x=x\10); return(s 
               + x) } ProdD(x)= { p=1; while (x>9, p=p*(x-10*(x\10)); x=x\10); return(p*x) 
               } { for (n=0, 1000, write("b061762.txt", n, " ", SumD(n) + ProdD(n)) 
               ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 27 2009]
%Y A061762 a(n) = A007953(n) + A007954(n). Cf. A061763, A038366.
%Y A061762 See A130858 for the smallest inverse.
%Y A061762 Sequence in context: A088133 A115299 A076312 this_sequence A136614 A097586 
               A098727
%Y A061762 Adjacent sequences: A061759 A061760 A061761 this_sequence A061763 A061764 
               A061765
%K A061762 nonn,base,easy
%O A061762 0,2
%A A061762 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 20 2001
%E A061762 Corrected and extended by Larry Reeves (larryr(AT)acm.org) and Matthew 
               M. Conroy, May 23 2001

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