login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188477 Expansion of (1+x+x^2)*(1-8*x^3-14*x^4+8*x^7+x^8)/(1+x^4)^3. 1
1, 1, 1, -8, -25, -25, -17, 32, 81, 81, 49, -72, -169, -169, -97, 128, 289, 289, 161, -200, -441, -441, -241, 288, 625, 625, 337, -392, -841, -841, -449, 512, 1089, 1089, 577, -648, -1369, -1369, -721, 800, 1681 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
COMMENTS
a(n+1) is the Hankel transform of A188476.
LINKS
MATHEMATICA
CoefficientList[Series[(1+x+x^2)(1-8x^3-14x^4+8x^7+x^8)/(1+x^4)^3, {x, 0, 50}], x] (* or *) LinearRecurrence[{0, 0, 0, -3, 0, 0, 0, -3, 0, 0, 0, -1}, {1, 1, 1, -8, -25, -25, -17, 32, 81, 81, 49, -72}, 50] (* Harvey P. Dale, May 29 2021 *)
CROSSREFS
Sequence in context: A302160 A122984 A254341 * A302632 A045860 A081504
KEYWORD
sign,easy
AUTHOR
Paul Barry, Apr 01 2011
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 15 23:38 EDT 2024. Contains 374343 sequences. (Running on oeis4.)