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Search: id:A120475
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| -1, 0, -2, 1, 1, -7, -7, 14, 14, 14, -75, 69, -164, -164, -164, 823, 823, 823, 823, -5942, 5004, 5004, -23653, 22715, -52310, -52310, 144108, -173703, -173703, -173703, -173703, 2004606, 2004606, 2004606, 2004606, 2004606, -22153211, 16934958, 16934958, 16934958, -148645183, 119269113
(list; graph; listen)
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OFFSET
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1,3
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MAPLE
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A000045 := proc(n) option remember ; combinat[fibonacci](n) ; end: A004001 := proc(n) option remember ; if n <= 0 then 0 ; elif n <= 2 then 1; else A004001(A004001(n-1))+A004001(n-A004001(n-1)) ; fi ; end: A120475 := proc(n) add( A000045(m)*(A004001(m+1)-2*A004001(m)+A004001(m-1)), m=1..n) ; end: seq(A120475(n), n=1..80) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 18 2007
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MATHEMATICA
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Conway[0] = 0; Conway[1] = Conway[2] = 1; Conway[n_Integer?Positive] := Conway[n] = Conway[Conway[n - 1]] + Conway[n - Conway[n - 1]] a[n_] := Fibonacci[n]*(Conway[n + 1] - 2*Conway[n] + Conway[n - 1]) Table[Sum[a[m], {m, 1, n}], {n, 1, 30}]
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CROSSREFS
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Cf. A000045, A004001, A120474.
Sequence in context: A015110 A128596 A139349 this_sequence A086738 A058955 A072286
Adjacent sequences: A120472 A120473 A120474 this_sequence A120476 A120477 A120478
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KEYWORD
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sign
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AUTHOR
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Roger Bagula (rlbagulatftn(AT)yahoo.com), Jul 07 2006
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EXTENSIONS
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Edited by njas, Aug 14 2006
More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 18 2007
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