login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A303569 a(n) = [x^n] ((Sum_{k=0..n} (k+7)!*x^k)/(Sum_{k=0..n} (k+7)!*(-x)^k))^(1/8). 4
1, 2, 2, 80, 158, 9428, 21740, 1814144, 4326566, 480716188, 1138919436, 162673628256, 377710551084, 67537379669352, 153236971128120, 33578612305618176, 74565718435602822, 19669491236331371820, 42886189370197775372, 13410838610779209885664 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..444

PROG

(PARI) N=20; x='x+O('x^N); Vec((sum(k=0, N, (k+7)!*x^k)/sum(k=0, N, (k+7)!*(-x)^k))^(1/8))

CROSSREFS

Cf. A303565, A303567, A303568, A303614.

Sequence in context: A028372 A130678 A230054 * A156523 A191779 A156511

Adjacent sequences:  A303566 A303567 A303568 * A303570 A303571 A303572

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Apr 26 2018

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 June 24 20:41 EDT 2021. Contains 345425 sequences. (Running on oeis4.)