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Search: id:A077406
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| A077406 |
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In base 3: 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
2
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| 0, 3, 5, 15, 17, 53, 1466, 9717, 32857, 37340, 37366, 37367, 531773
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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RECORDS transform of A077402. - Base 3 analogue of A066144 (base 2), A075686 (base 4) and A065198 (base 10). Integers like 103, for which a palindrome is (presumably) never reached (cf. A077404), are of course disregarded. A077407 gives the corresponding records.
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LINKS
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Index entries for sequences related to Reverse and Add!
N. J. A. Sloane, Transforms
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EXAMPLE
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Starting with 15, 3 Reverse and Add! steps are needed to reach a palindrome; starting with n < 15, less (at most 2) steps are needed.
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CROSSREFS
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Cf. A065198, A066144, A075686, A077402, A077404, A077407.
Sequence in context: A045544 A001317 A053576 this_sequence A054432 A016043 A077403
Adjacent sequences: A077403 A077404 A077405 this_sequence A077407 A077408 A077409
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KEYWORD
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base,more,nonn
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AUTHOR
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Klaus Brockhaus. (klaus-brockhaus(AT)t-online.de), Nov 05 2002
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