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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031644 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 56. 0
38858, 64090, 65617, 96221, 135593, 180001, 227818, 228773, 232613, 233578, 285517, 287657, 348541, 355657, 416554, 425633, 429554, 492026, 493429, 499061, 501889, 503306, 507569, 578329, 663437, 666697, 669965, 673241, 676525, 679817 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

CROSSREFS

Sequence in context: A204759 A206597 A088237 * A224622 A233955 A250515

Adjacent sequences:  A031641 A031642 A031643 * A031645 A031646 A031647

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

First term 3137 removed by Georg Fischer, Jun 16 2019

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 November 27 07:27 EST 2021. Contains 349365 sequences. (Running on oeis4.)