# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a130248 Showing 1-1 of 1 %I A130248 #7 Dec 25 2017 04:05:25 %S A130248 1,1,3,6,9,12,16,20,24,28,33,38,43,48,53,58,63,69,75,81,87,93,99,105, %T A130248 111,117,123,129,136,143,150,157,164,171,178,185,192,199,206,213,220, %U A130248 227,234,241,248,255,263,271,279,287,295,303,311,319,327,335,343,351 %N A130248 Partial sums of the Lucas Inverse A130247. %H A130248 G. C. Greubel, Table of n, a(n) for n = 1..5000 %F A130248 a(n)=sum{1<=k<=n, A130247(k)}=2+(n+1)*A130247(n)-A000032(A130247(n)+2) for n>=3. G.f.: g(x)=1/(1-x)^2*(sum{k>=1, x^Lucas(k)}-x^2). %t A130248 Join[{1, 1}, Table[Sum[Floor[Log[GoldenRatio, k + 1/2]], {k, 1, n}], {n, 3, 50}]] (* _G. C. Greubel_, Dec 24 2017 *) %Y A130248 Other related sequences: A000032, A130241, A130242, A130243, A130244, A130245, A130246, A130251, A130252, A130257, A130261. Fibonacci inverse see A130233 - A130240, A104162. %K A130248 nonn %O A130248 1,3 %A A130248 _Hieronymus Fischer_, May 19 2007 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE