OFFSET
0,2
COMMENTS
"Adrien-Marie Legendre in 1778 published his work 'Essai sur la théorie des nombres' where he proposed a modified form of the first approximation, pi(n) ~ n/ln n." (Gullberg)
REFERENCES
Jan Gullberg, "Mathematics, From the Birth of Numbers," W. W. Norton and Company, NY and London, 1997, page 80.
LINKS
Harry J. Smith, Table of n, a(n) for n = 0..500
MATHEMATICA
Table[ Round[ 10^n /(Log[10^n] - 1.08366) ], {n, 0, 22} ]
PROG
(PARI) { default(realprecision, 1000); t=log(10); for (n=0, 500, write("b058289.txt", n, " ", round(10^n/(n*t - 1.08366))); ); } \\ Harry J. Smith, Jun 22 2009
CROSSREFS
KEYWORD
sign
AUTHOR
Robert G. Wilson v, Dec 07 2000
EXTENSIONS
Corrected some terms. - Harry J. Smith, Jun 22 2009
STATUS
approved