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