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A039961 Triangle of coefficients in a Fibonacci-like sequence of polynomials. 1
1, 1, 1, -1, 1, -1, -1, 1, -1, -2, 1, 1, -1, -3, 2, 1, 1, -1, -4, 3, 3, -1, 1, -1, -5, 4, 6, -3, -1, 1, -1, -6, 5, 10, -6, -4, 1, 1, -1, -7, 6, 15, -10, -10, 4, 1, 1, -1, -8, 7, 21, -15, -20, 10, 5, -1, 1, -1, -9, 8, 28, -21, -35, 20, 15, -5, -1, 1, -1, -10 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,10
COMMENTS
Essentially the same as A108299. - Philippe Deléham, Feb 27 2014
REFERENCES
A. F. Horadam, R. P. Loh and A. G. Shannon, Divisibility properties of some Fibonacci-type sequences, pp. 55-64 of Combinatorial Mathematics VI (Armidale 1978), Lect. Notes Math. 748, 1979.
LINKS
FORMULA
q_{n+2}(x)=x*q_{n+1)(x)-q_n(x), q_1(x)=q_2(x)=1.
EXAMPLE
1; 1; 1 -1; 1 -1 -1; 1 -1 -2 1; 1 -1 -3 2 1; ...
CROSSREFS
Sequence in context: A136568 A342477 A152157 * A108299 A065941 A123320
KEYWORD
sign,tabf
AUTHOR
EXTENSIONS
More terms from Philippe Deléham, Feb 27 2014
STATUS
approved

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)