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A005972
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Partial sums of fourth powers of Lucas numbers.
(Formerly M5358)
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1
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1, 82, 338, 2739, 17380, 122356, 829637, 5709318, 39071494, 267958135, 1836197336, 12586569192, 86266785673, 591288786874, 4052734152890, 27777904133691, 190392453799372, 1304969641560028, 8944394070807629
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listen;
history;
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OFFSET
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1,2
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REFERENCES
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A. Brousseau, Fibonacci and Related Number Theoretic Tables. Fibonacci Association, San Jose, CA, 1972, p. 21.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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FORMULA
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G.f.: x*(1+76*x-164*x^2-79*x^3+16*x^4)/((1-x)^2*(1+3*x+x^2)*(1-7*x+x^2)). - Ralf Stephan, Apr 23 2004
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MAPLE
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lucas := proc(n) option remember: if n=1 then RETURN(1) fi: if n=2 then RETURN(3) fi: lucas(n-1)+lucas(n-2) end: l[0] := 0: for i from 1 to 50 do l[i] := l[i-1]+lucas(i)^4; printf(`%d, `, l[i]) od: # James A. Sellers, May 29 2000
A005972:=(1+76*z-164*z**2-79*z**3+16*z**4)/(z**2-7*z+1)/(z**2+3*z+1)/(z-1)**2; # Simon Plouffe in his 1992 dissertation
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MATHEMATICA
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Table[Fibonacci[4*n+2]+(-1)^n*(4*Fibonacci[n]^2+4*Fibonacci[n+1]^2)+6*n-5, {n, 1, 20}] (* Vaclav Kotesovec, Nov 19 2012 *)
CoefficientList[Series[(1 + 76 x - 164 x^2 - 79 x^3 + 16 x^4) / ((1 - x)^2 (1 + 3 x + x^2) (1 - 7 x + x^2)), {x, 0, 30}], x] (* Vincenzo Librandi, May 03 2012 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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