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!)
A279307 Numerators of coefficients in expansion of (sinh x)/(1 + cos(sqrt(x))). 1

%I #4 Dec 12 2016 09:16:43

%S 0,1,1,5,137,647,22951,328201,26965819,135880897,37044323689,

%T 91760237711,250120070812867,235374750708709,38112363401091809,

%U 1747698886011364219,2880212454433162868027,1444514603466022486187,54349494835431693600323

%N Numerators of coefficients in expansion of (sinh x)/(1 + cos(sqrt(x))).

%H Clark Kimberling, <a href="/A279307/b279307.txt">Table of n, a(n) for n = 0..1000</a>

%e (0/1) + (1/2)x + (1/8)x^2 + (5/48)x^3 + ... ; 0/1, 1/2, 1/8, 5/48, ... = A279307/A279239.

%t z = 30; t = CoefficientList[Series[Sinh[x]/(1 + Cos[Sqrt[x]]), {x, 0, z}], x];

%t Numerator[t] (* A279307 *)

%t Denominator[t] (* A279239 *)

%Y Cf. A279239.

%K nonn,easy,frac

%O 0,4

%A _Clark Kimberling_, Dec 11 2016

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 March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)