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A027691 n^2 + n + 6. 2
6, 8, 12, 18, 26, 36, 48, 62, 78, 96, 116, 138, 162, 188, 216, 246, 278, 312, 348, 386, 426, 468, 512, 558, 606, 656, 708, 762, 818, 876, 936, 998, 1062, 1128, 1196, 1266, 1338, 1412, 1488, 1566, 1646, 1728, 1812, 1898, 1986, 2076, 2168, 2262 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

LINKS

P. De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)

FORMULA

a(n)=2*n+a(n-1) (with a(0)=6) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 05 2010]

EXAMPLE

a(1)=2*1+6=8; a(2)=2*2+8=12; a(3)=2*3+12=18 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 05 2010]

MAPLE

with (combinat):seq(fibonacci(3, n)+n+5, n=0..47); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 07 2008

MATHEMATICA

Table[n^2+n+6, {n, 0, 100}] (*From Vladimir Joseph Stephan Orlovsky, Mar 12 2011*)

CROSSREFS

Cf. A002061, A002378, A002522.

Sequence in context: A050992 A090259 A089241 * A146529 A062533 A077670

Adjacent sequences:  A027688 A027689 A027690 * A027692 A027693 A027694

KEYWORD

nonn,easy

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

EXTENSIONS

Offset changed by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Jul 25 2010

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Last modified February 13 06:53 EST 2012. Contains 205451 sequences.