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A158997
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Palindromes of the form m*reversal(m)+1 where m >= reversal(m), sorted on m.
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2
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2, 5, 11, 404, 737, 161, 575, 101, 1001, 10001, 1008001, 1008001, 100001, 227218812722, 1000001, 10000001, 3536651551566353, 100000001, 1000000001, 26993605822850639962, 10000000001, 100000000001, 140452633741147336254041, 1000000000001
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refs;
listen;
history;
text;
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..24.
Carlos Rivera,P*R(P)+1 = Palprime
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MATHEMATICA
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r[n_]:=FromDigits[Reverse[IntegerDigits[n]]]; Do[If[m>=r[m]&& r[m r[m]+1]==m r[m]+1, Print[m r[m]+1]], {m, 1000000000}]
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CROSSREFS
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Cf. A177856, A158999.
Sequence in context: A064772 A107989 A069504 * A101828 A071293 A234572
Adjacent sequences: A158994 A158995 A158996 * A158998 A158999 A159000
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KEYWORD
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nonn,base,more
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AUTHOR
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Farideh Firoozbakht, Jul 09 2009
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EXTENSIONS
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a(20)-a(22) from Sean A. Irvine, Dec 13 2009
Cross-reference fixed by Franklin T. Adams-Watters, May 14 2010
a(23)-a(24) from Giovanni Resta, Aug 30 2018
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STATUS
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approved
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