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Search: id:A072145
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| A072145 |
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The period length of the 'Reverse and Subtract' trajectory of n is greater than 14. |
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2
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| 100000114412, 100000124422, 100000125522, 100000126622, 100000177959, 100000192292, 100000214413, 100000215513, 100000218813, 100000221123, 100000228823, 100000248843, 100000269963, 100000271173, 100000302204
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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'Reverse and Subtract' (cf. A072137) is defined by x -> |x - reverse(x)|. - Subsequence of A072144.
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EXAMPLE
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100000114412 -> 114410885589 -> 871177128822 -> 642355357644 -> 195601804398 -> 697806302193 -> 306602693397 -> 486793513206 -> 115521884478 and 115521884478 as a term of A072143 is the first term of the periodic part of the trajectory of 100000114412, period length is 22.
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CROSSREFS
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Cf. A072137, A072140, A072142, A072143, A072144.
Sequence in context: A017279 A017519 A017651 this_sequence A164935 A104799 A074337
Adjacent sequences: A072142 A072143 A072144 this_sequence A072146 A072147 A072148
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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), Jun 24 2002
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