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!)
A366404 G.f. A(x) satisfies A(x) = (1 + x / A(x)^(3/2)) / (1 - x). 9
1, 2, -1, 8, -29, 142, -707, 3714, -20106, 111570, -631046, 3624898, -21089378, 124014048, -735906537, 4401187158, -26501494072, 160532592098, -977574311830, 5981088128586, -36748815585834, 226651808352306, -1402726443269229, 8708648263017666 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(n) = (-1)^(n-1) * Sum_{k=0..n} binomial(5*k/2-1,k) * binomial(3*k/2-1,n-k) / (5*k/2-1).
PROG
(PARI) a(n) = (-1)^(n-1)*sum(k=0, n, binomial(5*k/2-1, k)*binomial(3*k/2-1, n-k)/(5*k/2-1));
CROSSREFS
Sequence in context: A052312 A110742 A252355 * A013123 A012965 A013119
KEYWORD
sign
AUTHOR
Seiichi Manyama, Oct 09 2023
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 April 15 11:42 EDT 2024. Contains 371681 sequences. (Running on oeis4.)