login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A086340 Numbers n such that 1 + (n-1)*n*(n+1) is a square. 0
1, 3, 5, 56 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

M. Lambrou, Solution to problem 2411, Crux Mathematicorum, Feb. 2000 26(1) 59-60 CMS.

CROSSREFS

Sequence in context: A056260 A020462 A087602 * A155121 A106914 A049190

Adjacent sequences:  A086337 A086338 A086339 * A086341 A086342 A086343

KEYWORD

fini,nonn

AUTHOR

Lekraj Beedassy (blekraj(AT)yahoo.com), Sep 02 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 21:51 EST 2012. Contains 205978 sequences.