OFFSET
1,2
COMMENTS
The sequence provides an indication of regions of nearly no improvements of the sequence of convergents to Pi when measured by the count of correct digits after rounding. A "plateau" of n consecutive integers is defined by a(n) = j such that A138343(j) = A138343(j+n-1) and such that none of the intermediate A138343 with index j+1 up to j+n-2 drop below this level.
EXAMPLE
CROSSREFS
KEYWORD
nonn,less,base,bref
AUTHOR
Artur Jasinski, Mar 16 2008
EXTENSIONS
Definition and values adapted to redefined A138343 - R. J. Mathar, Oct 01 2009
STATUS
approved