Search: id:A131068
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%I A131068
%S A131068 1,2,10,32,82,188,406,848,1738,3524,7102,14264,28594,57260,114598,
%T A131068 229280,458650,917396,1834894,3669896,7339906,14679932,29359990,
%U A131068 58720112,117440362,234880868,469761886,939523928,1879048018,3758096204
%N A131068 Binomial transform of [1, 1, 7, 7, 7,...].
%C A131068 Row sums of triangle A131067. - Emeric Deutsch (deutsch(AT)duke.poly.edu), 
               Jun 20 2007
%F A131068 a(n)=7*2^n-6*n-6. G.f.=(1-2x+7x^2)/[(1-2x)(1-x)^2]. - Emeric Deutsch 
               (deutsch(AT)duke.poly.edu), Jun 20 2007
%e A131068 a(3) = 32 = sum of row 4 terms of triangle A131067: (1 + 15 + 15 + 1).
%e A131068 a(3) = 32 = (1, 3, 3, 1) dot (1, 1, 7, 7) = (1 + 3 + 21 + 7).
%p A131068 a := proc (n) options operator, arrow; 7*2^n-6*n-6 end proc: seq(a(n), 
               n = 0 .. 30); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 
               2007
%t A131068 s=1;lst={s};Do[s+=s+=n;AppendTo[lst, s], {n, 0, 5!, 3}];lst [From Vladimir 
               Orlovsky (4vladimir(AT)gmail.com), Nov 10 2008]
%Y A131068 Cf. A131060, A131061, A131062, A131063, A131064, A131065, A131066, A131067.
%Y A131068 Sequence in context: A050927 A011921 A103290 this_sequence A034555 A084154 
               A083099
%Y A131068 Adjacent sequences: A131065 A131066 A131067 this_sequence A131069 A131070 
               A131071
%K A131068 nonn
%O A131068 0,2
%A A131068 Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 13 2007
%E A131068 Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), 
               Jun 20 2007

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