A143050 A nonsense sequence.

0, -1, 0, 3, -3, 2, -5, 6, 0, -24, 23, -23, 47, 7, 88, 143, -376, -5, 5, 514, 755, 654, 2304, -2992, -3025, 3025, 2271, 11279, -720, 18847, -112, -48141, 48141, -29182, 85227, -95338, 8960, 381240, -389049, 389049, -761329, -69609, -1445240, -2268369, 6162200, -110613, 110613, -8541182, -12033565

Offset

1,4

Links

Table of n, a(n) for n=1..49.

Mathematica

m0 = Inverse[{{0, I}, {I, 1}}];
M[0] = {{0, -1}, {-1, -1}}.m0;
M[1] = {{1, 0}, {-1, -1}}.m0;
M[2] = {{-1, 0}, {-1, -1}}.m0;
M[3] = {{0, 1}, {-1, -1}}.m0;
M[4] = I*{{0, -1}, {-1, -1}}.m0;
M[5] = I*{{1, 0}, {-1, -1}}.m0;
M[6] = I*{{-1, 0}, {-1, -1}}.m0;
M[7] = I*{{0, 1}, {-1, -1}}.m0;
v[0] = {1, 1};
v[n_] := v[n] = M[Mod[n, 7]].v[n - 1];
ar = Table[Re[v[n][[1]]], {n, 0, 50}];
ai = Table[Im[v[n][[1]]], {n, 0, 50}]

Crossrefs

Sequence in context: A320776 A279056 A265751 * A214919 A290599 A070163

Adjacent sequences: A143047 A143048 A143049 * A143051 A143052 A143053

Keyword

uned,sign,less

Author

Roger L. Bagula, Oct 13 2008

Status

approved