Search: id:A048492
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%I A048492
%S A048492 1,3,8,20,47,105,226,474,977,1991,4028,8112,16291,32661,65414,130934,
%T A048492 261989,524115,1048384,2096940,4194071,8388353,16776938,33554130,
%U A048492 67108537,134217375,268435076,536870504,1073741387,2147483181
%N A048492 a(n)= ( 8*(2^n) -n^2 -3*n -6 )/2.
%C A048492 Partial sums of A000325, starting at n=1. [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 
               Oct 13 2008]
%F A048492 a(0) = 1; a(n) = a(n-1) + 2^(n+1) - (n+1) for n > 0. [From Klaus Brockhaus 
               (klaus-brockhaus(AT)t-online.de), Oct 13 2008]
%t A048492 lst={};s=0;Do[s+=2^n-n;AppendTo[lst, s], {n, 5!}];lst [From Vladimir 
               Orlovsky (4vladimir(AT)gmail.com), Sep 30 2008]
%o A048492 (ARIBAS) a:=0; for n:=1 to 30 do a:=a+2**n-n; write(a, ","); end; [From 
               Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Oct 13 2008]
%Y A048492 a(n)=T(0, n)+T(1, n-1)+...+T(n, 0), array T given by A048483.
%Y A048492 Cf. A000325 (2^n - n), A145070. [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 
               Oct 13 2008]
%Y A048492 Sequence in context: A036676 A101533 A138803 this_sequence A006776 A050231 
               A136305
%Y A048492 Adjacent sequences: A048489 A048490 A048491 this_sequence A048493 A048494 
               A048495
%K A048492 nonn
%O A048492 0,2
%A A048492 Clark Kimberling (ck6(AT)evansville.edu)
%E A048492 Better description from Frank Ellermann, Mar 16, 2002
%E A048492 Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 08 2006

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