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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A059592 Square-full part of n^2+1. 9
 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 17, 1, 1, 29, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 13, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 COMMENTS a(n)=A000188[n^2+1], A059591[n]*a(n)^2 = n^2+1 Related to period-1 continued fractions [z,z,z,...] A124808 gives number of numbers m<=n with a(m)=1. - Reinhard Zumkeller, Nov 08 LINKS R. Zumkeller, Table of n, a(n) for n = 0..1000 EXAMPLE a(7)=5 since 7^2+1 = 50 = 25*2 = (5^2)*2 CROSSREFS Cf. A002522. Sequence in context: A337337 A119788 A334561 * A295554 A319099 A098087 Adjacent sequences:  A059589 A059590 A059591 * A059593 A059594 A059595 KEYWORD easy,nonn AUTHOR Marc LeBrun, Jan 25 2001 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.

Last modified June 19 03:23 EDT 2021. Contains 345125 sequences. (Running on oeis4.)