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!)
A111784 Eleventh column (m=10) of unsigned triangle A111595. 1
1, 110, 7326, 386100, 17846829, 762431670, 31039608600, 1227833727120, 47809764352350, 1849155516788580, 71501760198168300, 2777115998421765000, 108722966424618095550, 4301625967084096150500, 172338358130509601230200 (list; graph; refs; listen; history; text; internal format)
OFFSET
10,2
LINKS
FORMULA
E.g.f.: (1/sqrt(1-x^2))*((x/(1-x))^10)/10!.
a(n) = (n!/10!)*Sum_{k=0..floor((n-10)/2)} binomial(2*k, k)*binomial(n-2*k-1, 9)/(4^k), n >= 10.
MATHEMATICA
With[{nn=30}, Drop[CoefficientList[Series[1/Sqrt[1-x^2] (x/(1-x))^10/ 10!, {x, 0, nn}], x] Range[0, nn]!, 10]] (* Harvey P. Dale, May 22 2016 *)
CROSSREFS
Sequence in context: A250528 A251029 A111600 * A146495 A063751 A266179
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Aug 23 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 22 10:13 EDT 2023. Contains 365520 sequences. (Running on oeis4.)