Search: id:A159930
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%I A159930
%S A159930 1,2,1,5,4,3,17,16,15,12,77,76,75,72,60,437,436,435,432,420,360,2957,
%T A159930 2956,2955,2952,2940,2880,2520,23117,23116,23115,23112,23100,23040,
%U A159930 22680,20160,204557,204556,204555,204552,204540,204480,204120,201600
%N A159930 Triangle read by rows: a(1,1)=1. a(m,n) = a(m-1,n) + (sum of all terms 
               in row m-1), for n<m. a(m,m) = sum of all terms in row m-1.
%C A159930 The sum of all terms in row m is (m+1)!/2. So, a(m,n) = a(m-1,n) + m!/
               2, or is m!/2 if n=m.
%o A159930 (MAGMA) S:=[1]; T:=S; for m in [2..9] do s:=&+T; T:=[ n lt m select T[n]+s 
               else s: n in [1..m] ]; S:=S cat T; end for; S; [From Klaus Brockhaus 
               (klaus-brockhaus(AT)t-online.de), Jun 02 2009]
%Y A159930 A159927
%Y A159930 Sum of m-th row = A001710(m+1). [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 
               Jun 02 2009]
%Y A159930 Sequence in context: A164679 A061579 A094064 this_sequence A058344 A010582 
               A019473
%Y A159930 Adjacent sequences: A159927 A159928 A159929 this_sequence A159931 A159932 
               A159933
%K A159930 nonn,tabl
%O A159930 1,2
%A A159930 Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Apr 26 2009
%E A159930 More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 
               02 2009

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