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A027713
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Palindromes of form n^2+n+2.
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1
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2, 4, 8, 22, 44, 212, 242, 464, 2552, 8558, 40604, 41414, 85558, 229922, 805508, 2029202, 2342432, 2737372, 4006004, 4437344, 4767674, 281585182, 400060004, 440727044, 805282508, 8059999508, 40000600004, 47997579974, 251476674152
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internal format)
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..29.
P. De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)
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MATHEMATICA
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palQ[n_]:=Module[{idn=IntegerDigits[n]}, idn==Reverse[idn]]; Select[ Table[ n^2+n+2, {n, 0, 502000}], palQ] (* From Harvey P. Dale, Sep 15 2011 *)
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PROG
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(MAGMA) [ p: n in [0..1000000] | s eq Reverse(s) where s is Intseq(p) where p is n^2+n+2 ]; // Vincenzo Librandi, Mar 27 2011
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CROSSREFS
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Cf. A027712, A014206.
Sequence in context: A133604 A192149 A115778 * A155765 A217975 A027385
Adjacent sequences: A027710 A027711 A027712 * A027714 A027715 A027716
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest
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STATUS
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approved
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