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Search: id:A128034
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| A128034 |
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a(0)=a(1)=1. a(n) = the multiple of n which is > a(n-1)+a(n-2) and is <= a(n-1)+a(n-2)+n. |
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+0
2
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| 1, 1, 4, 6, 12, 20, 36, 63, 104, 171, 280, 462, 744, 1209, 1960, 3180, 5152, 8347, 13500, 21850, 35360, 57225, 92598, 149845, 242448, 392300, 634764, 1027080, 1661856, 2688938, 4350810, 7039759, 11390592, 18430368, 29820992, 48251385, 78072408
(list; graph; listen)
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OFFSET
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0,3
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LINKS
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Leroy Quet, Home Page (listed in lieu of email address)
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FORMULA
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a(n) = n * (1 +floor[(a(n-1)+a(n-2))/n]).
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MATHEMATICA
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f[l_List] := Block[{n = Length[l]}, Append[l, n*(1 + Floor[(l[[ -1]] + l[[ -2]])/n])]]; Nest[f, {1, 1}, 36] (*Chandler*)
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CROSSREFS
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Cf. A128035.
Sequence in context: A019445 A119638 A110935 this_sequence A027150 A020141 A049478
Adjacent sequences: A128031 A128032 A128033 this_sequence A128035 A128036 A128037
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KEYWORD
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easy,nonn
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AUTHOR
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Leroy Quet Feb 11 2007
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Feb 12 2007
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