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 A117954 Reversible Lynch-Bell numbers. 0
 1, 2, 3, 4, 5, 6, 7, 8, 9, 216, 612, 2136, 2196, 2316, 2364, 2916, 4236, 4632, 4896, 6132, 6192, 6312, 6324, 6912, 6984, 21384, 42816, 48312, 61248, 61824, 84216, 213648, 213864, 213984, 219384, 234168, 234816, 236184, 238416, 291384, 293184, 428136, 468312, 481392, 481632, 483192, 483216, 483912, 489312, 612384, 614328, 614832, 618432, 631248, 631824, 823416, 842136, 846312, 861432, 6379128, 8219736 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS There are 61 terms; all the multi-digit terms are even. LINKS EXAMPLE a(60)=6379128 and a(61)=8219736 because both 6379128 and its reversal, 8219736, are Lynch-Bell numbers (A115569) -- and there are no intervening (or indeed any other) 7-digit such terms. CROSSREFS Cf. A115569. Sequence in context: A249515 A217555 A137667 * A029966 A219324 A085134 Adjacent sequences:  A117951 A117952 A117953 * A117955 A117956 A117957 KEYWORD base,fini,full,nonn AUTHOR Rick L. Shepherd, Apr 05 2006 STATUS approved

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Last modified December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)