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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A140719 Primes of form n^3-(n+1)^2. 6
11, 89, 167, 431, 1187, 1559, 3119, 5471, 7559, 18899, 34781, 41579, 57719, 67157, 89009, 108191, 122399, 154439, 270269, 283007, 309671, 628487, 650759, 770039, 875327, 960299, 1213379, 1547207, 1800719, 1845491, 1984247, 2608751, 2724119 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

3^3-4^2=27-16=11, 5^3-6^2=125-36=89, 6^3-7^2=216-49=167,...

MATHEMATICA

a={}; Do[p=n^3-(n+1)^2; If[PrimeQ[p], AppendTo[a, p]], {n, 2, 140}]; a - Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2008

Select[ #^3 - (# + 1)^2 & /@ Range[2, 140], PrimeQ@ # &] (* RGWv *) - Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2008

CROSSREFS

Sequence in context: A175605 A162576 A142166 * A128448 A121155 A201117

Adjacent sequences:  A140716 A140717 A140718 * A140720 A140721 A140722

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 11 2008

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2008

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 14 21:44 EST 2012. Contains 205663 sequences.