login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A048429 Smallest numerator of a fraction using palindromes that approximates Pi to at least n digits after the decimal point. 1
22, 22, 666, 666, 1186811, 1633361, 7327237, 204656402, 971292179, 32418381423, 185295592581, 5760554550675, 6259909099526, 148967656769841 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

a(4)=666 because the ratio of palindromes 666/212 = 3.1415... approximates Pi with four correct digits after the decimal point.

CROSSREFS

Denominators in A048430.

Sequence in context: A134443 A165843 A223821 * A336827 A004463 A152835

Adjacent sequences:  A048426 A048427 A048428 * A048430 A048431 A048432

KEYWORD

nonn,frac,base

AUTHOR

Patrick De Geest, Apr 15 1999

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 2 06:44 EST 2020. Contains 338868 sequences. (Running on oeis4.)