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A117841
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Start with 1 and repeatedly reverse the digits and add 10 to get the next term.
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2
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1, 11, 21, 22, 32, 33, 43, 44, 54, 55, 65, 66, 76, 77, 87, 88, 98, 99, 109, 911, 129, 931, 149, 951, 169, 971, 189, 991, 209, 912, 229, 932, 249, 952, 269, 972, 289, 992, 309, 913, 329, 933, 349, 953, 369, 973, 389, 993, 409, 914, 429, 934, 449, 954, 469, 974, 489, 994, 509
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| This sequence (unlike A117828, say) never cycles.
Comment from Martin Fuller, May 12 2006: The operation can never generate a trailing zero and so is reversible. So it loops only if it returns to the start, which is impossible.
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LINKS
| N. J. A. Sloane, Sequences of RADD type
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CROSSREFS
| Cf. A117830, A117828, A117816, A117817.
Sequence in context: A108237 A084906 A118853 * A105956 A178413 A050718
Adjacent sequences: A117838 A117839 A117840 * A117842 A117843 A117844
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KEYWORD
| nonn,base
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AUTHOR
| David Applegate (david(AT)research.att.com), May 05 2006
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