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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A071341 a(n) = greatest positive r <= n, such that the origin-centered circle of radius sqrt(r) touches A071339(n) lattice points. 1
 0, 1, 4, 5, 13, 25, 25, 25, 50, 65, 85, 85, 130, 145, 185, 221, 250, 265, 305, 325, 325, 425, 425, 425, 425, 425, 650, 725, 725, 725, 850, 925, 925, 1025, 1105, 1105, 1105, 1105, 1105, 1105, 1105, 1625, 1625, 1625, 1885, 1885, 1885, 2125, 2210 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..48. EXAMPLE a(4)=13 because the largest circle with radius <= 4 to touch A071339(4)=8 points has radius sqrt(13). PROG (FORTRAN) See A071339. CROSSREFS Cf. A071339-A071347. Sequence in context: A247325 A140683 A304599 * A272898 A102981 A257487 Adjacent sequences: A071338 A071339 A071340 * A071342 A071343 A071344 KEYWORD easy,nonn AUTHOR Hugo Pfoertner, May 22 2002 EXTENSIONS Edited by Don Reble, Nov 06 2005 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 2 23:30 EDT 2023. Contains 365841 sequences. (Running on oeis4.)