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A090062
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There is (presumably) one and only one palindrome in the Reverse and Add! trajectory of n.
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0
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89, 98, 167, 187, 266, 286, 365, 385, 479, 563, 578, 583, 662, 677, 682, 749, 761, 776, 779, 781, 829, 860, 869, 875, 880, 899, 928, 947, 968, 974, 977, 998, 1077, 1093, 1098, 1167, 1183, 1188, 1257, 1273, 1278, 1297, 1347, 1363, 1368, 1387, 1396, 1397, 1437
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| For terms < 2000 the only palindrome is reached from the start in at most 24 steps; thereafter no further palindrome is reached in 2000 steps.
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LINKS
| Index entries for sequences related to Reverse and Add!
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EXAMPLE
| The trajectory of 479 begins 479, 1453, 4994, 9988, 18887, ...; at 9988 it joins the (presumably) palindrome-free trajectory of A063048(3) = 1997, hence 4994 is the only palindrome in the trajectory of 479 and 479 is a term.
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CROSSREFS
| Cf. A023108, A023109, A065001, A070742, A077594.
Sequence in context: A107202 A178917 A159026 * A166370 A039437 A043260
Adjacent sequences: A090059 A090060 A090061 * A090063 A090064 A090065
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KEYWORD
| nonn,base
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AUTHOR
| Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Nov 20 2003
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