login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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

Table of n, a(n) for n=1..70.

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

Cf. A065941, A108299.

Sequence in context: A086290 A136568 A152157 * A065941 A108299 A123320

Adjacent sequences:  A039958 A039959 A039960 * A039962 A039963 A039964

KEYWORD

sign,tabf

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Philippe Deléham, Feb 27 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 19 14:53 EST 2018. Contains 299334 sequences. (Running on oeis4.)