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A140698
This sequence needs a meaningful name.
0
1, 0, 1, 1, -1, 1, -1, 1, -1, 1, 1, 1, 0, -1, 1, -1, -2, 0, 0, -1, 1, 1, 1, 1, 0, 0, -1, 1, -1, 1, 1, 0, 0, 0, -1, 1, 1, -2, -2, 0, 0, 0, 0, -1, 1, -1, 1, 0, 1, 0, 0, 0, 0, -1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, -1, 1
OFFSET
1,17
EXAMPLE
{1},
{0, 1},
{1, -1, 1},
{-1, 1, -1, 1},
{1, 1, 0, -1, 1},
{-1, -2, 0, 0, -1, 1},
{1, 1, 1, 0, 0, -1, 1},
{-1, 1, 1, 0, 0, 0, -1, 1},
{1, -2, -2, 0, 0, 0, 0, -1, 1},
{-1, 1, 0, 1, 0, 0, 0, 0, -1, 1},
{1, 1, 0, 1, 0, 0, 0, 0, 0, -1, 1}
...
MATHEMATICA
p[x_, n_] = (x^Prime[n] + x^(Prime[n] - 1) + 1)/Cyclotomic[Prime[n], x];
a = Table[CoefficientList[Normal[Series[p[x, n], {x, 0, 30}]], x], {n, 31}];
(* antidiagonal triangular sequence representation *)
b = Table[a[[m, n - m + 1]], {n, 11}, {m, n}]; Flatten[b]
CROSSREFS
Sequence in context: A037844 A037880 A241035 * A231599 A333290 A321924
KEYWORD
uned,tabl,sign,less
AUTHOR
STATUS
approved