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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A031766 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 88. 1
 1937, 7746, 17427, 30980, 48405, 69702, 94871, 123912, 156825, 193610, 234267, 278796, 327197, 379470, 435615, 495632, 559521, 627282, 698915, 774420, 853797, 937046, 1024167, 1115160, 1210025, 1308762, 1411371, 1517852, 1628205, 1742430 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS From Chai Wah Wu, Nov 07 2016: (Start) If r is even, then the least term of the continued fraction of (r*m/2)^2+m is r for all m >= 1. On the other hand, the least term of the continued fraction of r^4/4 + r^3 + 2r^2 + 3r+2 is also r but it is not of the form (r*m/2)^2+m. If r is odd, then the least term of the continued fraction of (r*m)^2+2m is r for all m >= 1 and the least term of the continued fraction of r^4 + r^3 + 5*(r+1)^2/4 is also r but it is not of the form (r*m)^2+2m. This means that 1936*m^2 + m are terms of the sequence for all m >= 1 and 15689610 is also a term but not of the form 1936*m^2 + m. (End) LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 CROSSREFS Sequence in context: A264109 A188369 A185570 * A031542 A214478 A259513 Adjacent sequences: A031763 A031764 A031765 * A031767 A031768 A031769 KEYWORD nonn AUTHOR David W. Wilson STATUS approved

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.

Last modified October 3 06:44 EDT 2023. Contains 365842 sequences. (Running on oeis4.)