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A110853
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Squares of the form prime(n)*(n+1)^2 + 1.
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0
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OFFSET
| 1,1
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COMMENTS
| No further terms less than 4.89*10^24 (n=62662502). - Chandler
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EXAMPLE
| prime(1)*(1+1)^2+1= 2* 4+1= 9 = 3^2.
prime(3)*(3+1)^2+1= 5* 42+1= 81 = 9^2.
prime(7)*(7+1)^2+1=31*100+1=1089 =33^2.
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MATHEMATICA
| Do[ s = Prime[n](n + 1)^2 + 1; If[ IntegerQ[ Sqrt[s]], Print[s]], {n, 5000000}] Robert G. Wilson v (rgwv(at)rgwv.com), Sep 26 2005
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CROSSREFS
| Sequence in context: A104266 A061433 A069659 * A167723 A203107 A168493
Adjacent sequences: A110850 A110851 A110852 * A110854 A110855 A110856
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KEYWORD
| nonn,bref
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AUTHOR
| Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Sep 17 2005
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EXTENSIONS
| Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 26 2005
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