|
|
A093596
|
|
a(n) = Pi^(2n)*denominator of Sum_{k in A030059} 1/k^(2n).
|
|
1
|
|
|
2, 2, 691, 7234, 174611, 163327586881, 13571120588, 55769228412163778, 1154372017217796891921391, 45587914559383477650447161, 786244320265033260236106076, 1325861528365506758393998232189714777
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
(Denominator of (zeta(2n)^2-zeta(4n))/(2zeta(2n)zeta(4n)))/Pi^(2n). See Eqns (28) to (31) of the link.
|
|
EXAMPLE
|
9/(2*Pi^2), 15/(2*Pi^4), 11340/(691*Pi^6), 278775/(7234*Pi^8), ...
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,frac
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|