login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031678 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 90. 0

%I #12 Aug 18 2021 00:10:32

%S 101173,165730,248125,348269,457201,458554,596273,733097,895357,

%T 1082129,1273009,1275266,1279786,1284314,1286581,1293394,1489129,

%U 1508713,1716941,1727437,1732697,1949777,1955365,1960961,1972177,1983425,2221189

%N Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 90.

%K nonn

%O 1,1

%A _David W. Wilson_

%E First term 8101 removed by _Georg Fischer_, Jun 16 2019

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 1 04:03 EDT 2024. Contains 375575 sequences. (Running on oeis4.)