|
|
A245286
|
|
Decimal expansion of the Landau-Kolmogorov constant C(4,1) for derivatives in L_2(0, infinity).
|
|
2
|
|
|
2, 2, 7, 4, 3, 2, 2, 3, 5, 0, 9, 7, 9, 9, 3, 7, 1, 1, 8, 1, 6, 0, 6, 4, 4, 3, 1, 2, 0, 6, 6, 9, 7, 8, 3, 9, 8, 9, 6, 6, 6, 2, 8, 5, 6, 7, 9, 9, 0, 1, 0, 6, 9, 7, 1, 8, 0, 6, 1, 1, 9, 9, 1, 7, 1, 4, 8, 4, 6, 4, 8, 1, 7, 0, 5, 8, 8, 1, 1, 5, 3, 1, 4, 8, 7, 0, 3, 6, 5, 9, 4, 6, 4, 5, 5, 2, 1, 0, 9, 2, 2, 3, 9
(list;
constant;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
REFERENCES
|
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 3.3 Landau-Kolmogorov constants, p. 214.
|
|
LINKS
|
|
|
FORMULA
|
(1/a*(3^(1/4) + 3^(-3/4)))^(1/2), where a is the smallest positive root of x^8 - 6*x^4 - 8*x^2 + 1.
|
|
EXAMPLE
|
2.274322350979937118160644312066978398966628567990106971806119917148464817...
|
|
MATHEMATICA
|
a = Root[x^8 - 6*x^4 - 8*x^2 + 1, 3]; RealDigits[(1/a*(3^(1/4) + 3^(-3/4)))^(1/2), 10, 103] // First
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|