|
|
A195563
|
|
Numerators b(n) of Pythagorean approximations b(n)/a(n) to 1/4.
|
|
3
|
|
|
0, 7, 9, 16, 399, 657, 1040, 26391, 43289, 68640, 1741343, 2856481, 4529184, 114902311, 188484393, 298857520, 7581811119, 12437113521, 19720067120, 500284631607, 820661007929, 1301225572416, 33011203874879, 54151189409857
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
See A195500 for discussion and list of related sequences; see A195562 for Mathematica program.
|
|
LINKS
|
|
|
FORMULA
|
Empirical g.f.: -x^2*(x^7-x^6-72*x^4+56*x^3-16*x^2-9*x-7) / (x^9-65*x^6-65*x^3+1). - Colin Barker, Jun 04 2015
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|