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A152721 A prime based vector recursion: a(n)={Prime[n+1],Prime[n],Prime[n-1],-Prime[n-2],...,-1,-1}. 0

%I #3 Mar 30 2012 17:34:28

%S -1,1,-1,5,-1,-1,7,-5,-1,-1,11,-7,-5,-1,-1,13,-11,-7,-5,-1,-1,17,-13,

%T -11,-7,-5,-1,-1,19,-17,-13,-11,-7,-5,-1,-1,23,-19,-17,-13,-11,-7,-5,

%U -1,-1,29,-23,-19,-17,-13,-11,-7,-5,-1,-1,31,-29,-23,-19,-17,-13,-11,-7,-5

%N A prime based vector recursion: a(n)={Prime[n+1],Prime[n],Prime[n-1],-Prime[n-2],...,-1,-1}.

%C Row sums are:

%C {-1, 0, 3, 0, -3, -12, -21, -36, -51, -68, -95,...}

%F a(n)={Prime[n+1],Prime[n],Prime[n-1],-Prime[n-2],...,-1,-1}.

%e {-1},

%e {1, -1},

%e {5, -1, -1},

%e {7, -5, -1, -1},

%e {11, -7, -5, -1, -1},

%e {13, -11, -7, -5, -1, -1},

%e {17, -13, -11, -7, -5, -1, -1},

%e {19, -17, -13, -11, -7, -5, -1, -1},

%e {23, -19, -17, -13, -11, -7, -5, -1, -1},

%e {29, -23, -19, -17, -13, -11, -7, -5, -1, -1},

%e {31, -29, -23, -19, -17, -13, -11, -7, -5, -1, -1}

%t b[0] = {-1}; b[1] = {1, -1};

%t b[n_] := b[n] = Join[{Prime[n + 1 ]}, {-b[n - 1][[1]]}, Table[b[n - 1][[i]], {i, 2, Length[b[n - 1]]}]];

%t Table[b[n], {n, 0, 10}]; Flatten[%]

%Y A152568, A027293

%K sign

%O 0,4

%A _Roger L. Bagula_, Dec 11 2008

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Last modified July 25 03:44 EDT 2024. Contains 374586 sequences. (Running on oeis4.)