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4, 6, 10, 16, 24, 34, 46, 60, 76, 94, 114, 136, 160, 186, 214, 244, 276, 310, 346, 384, 424, 466, 510, 556, 604, 654, 706, 760, 816, 874, 934, 996, 1060, 1126, 1194, 1264, 1336, 1410, 1486, 1564, 1644, 1726, 1810, 1896, 1984, 2074, 2166, 2260
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| P. De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)
Index entries for sequences related to linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| a(n)=A000217(n-2)+A000217(n+2) for n>0. - Jon Perry (perry(AT)globalnet.co.uk), Jul 23 2003
a(n)=2*n+a(n-1)-2 (with a(1)=4) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 05 2010]
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MAPLE
| with (combinat):seq(fibonacci(3, n)+n+3, n=0..47); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 07 2008
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MATHEMATICA
| Table[n^2+n+4, {n, 0, 100}] (*From Vladimir Joseph Stephan Orlovsky, Feb 17 2011*)
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CROSSREFS
| Cf. A002522.
Sequence in context: A076529 A102768 A075637 * A023501 A050887 A078642
Adjacent sequences: A027686 A027687 A027688 * A027690 A027691 A027692
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KEYWORD
| nonn,easy
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com)
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