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Search: id:A065198
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| A065198 |
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n sets a new record for the number of 'Reverse and Add' steps needed to reach a palindrome starting with n. |
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+0
17
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| 0, 10, 19, 59, 69, 79, 89, 10548, 10677, 10833, 10911, 147996, 150296, 1000689, 1005744, 1007601, 7008899, 9008299, 100239862, 140669390, 1005499526, 10000442119, 10000761554, 10000853648, 10000973037, 10031199494, 10087799570, 1000006412206, 1090604591930, 1600005969190, 100000090745299, 100120849299260, 10000043099946481, 10078083499399210, 10442000392399960
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Integers like 196, for which a palindrome is supposedly never reached, are of course disregarded. A065199 gives the corresponding records.
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LINKS
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Jason Doucette, World records
Index entries for sequences related to Reverse and Add!
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EXAMPLE
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Starting with 89, 24 'Reverse and Add' steps are needed to reach a palindrome; starting with n < 89, less (at most 6) steps are needed.
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CROSSREFS
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Cf. A033665, A033865, A023109, A065199.
Sequence in context: A083705 A082659 A088409 this_sequence A023109 A033866 A007811
Adjacent sequences: A065195 A065196 A065197 this_sequence A065199 A065200 A065201
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KEYWORD
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base,nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Oct 20 2001
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EXTENSIONS
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Terms a(16) to a(20) from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Dec 05 2001
Terms a(21) ff. were taken from Jason Doucette, World records. - Klaus Brockhaus, Sep 24 2003
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