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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A104976 Row sums of a Fredholm-Rueppel inverse triangle. 1
1, 1, 0, 0, 1, 1, -1, -1, 2, 2, -2, -2, 4, 4, -6, -6, 9, 9, -13, -13, 21, 21, -31, -31, 47, 47, -71, -71, 109, 109, -165, -165, 250, 250, -380, -380, 578, 578, -876, -876, 1330, 1330, -2020, -2020, 3068, 3068, 4656, -4656, 7070, 7070, -10736, -10736, 16300, 16300, -24746, -24746, 37574, 37574, -57050, -57050 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,9

COMMENTS

Row sums of A104975.

LINKS

Table of n, a(n) for n=0..59.

FORMULA

G.f. : x^2/(sum{k>=0, x^(2^k)}-x)/(1-x)

CROSSREFS

Sequence in context: A239494 A071809 A324762 * A325710 A214927 A326115

Adjacent sequences:  A104973 A104974 A104975 * A104977 A104978 A104979

KEYWORD

easy,sign

AUTHOR

Paul Barry, Mar 30 2005

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 03:21 EDT 2019. Contains 328335 sequences. (Running on oeis4.)