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Search: id:A135575
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| 0, 3, -5, 9, -16, 30, -63, 129, -257, 513, -1024, 2046, -4095, 8193, -16385, 32769, -65536, 131070, -262143, 524289, -1048577, 2097153, -4194304, 8388606, -16777215, 33554433, -67108865, 134217729, -268435456, 536870910, -1073741823, 2147483649, -4294967297, 8589934593
(list; graph; listen)
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OFFSET
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0,2
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MAPLE
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A024495 := proc(n) option remember ; if n <=1 then 0 ; elif n = 2 then 1; elif n = 3 then 3 ; else A024495(n-1)-A024495(n-2)+2^(n-2) ; fi ; end: A135574 := proc(n) option remember ; A024495(2*floor(n/2)+1 - ( n mod 2)) ; end: A135575 := proc(n) A135574(n+1)-2*A135574(n) ; end: seq(A135575(n), n=0..80) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 31 2008
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CROSSREFS
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Adjacent sequences: A135572 A135573 A135574 this_sequence A135576 A135577 A135578
Sequence in context: A094980 A069818 A054180 this_sequence A143106 A130114 A143105
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KEYWORD
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sign,easy
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Feb 24 2008
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 31 2008
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