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 A235775 a(n) = A047842(A047842(n)), say what you see, once repeated. 2
 1011, 21, 1112, 1113, 1114, 1115, 1116, 1117, 1118, 1119, 1031, 1112, 3112, 3113, 3114, 3115, 3116, 3117, 3118, 3119, 102112, 3112, 22, 211213, 211214, 211215, 211216, 211217, 211218, 211219, 102113, 3113, 211213, 1213, 211314, 211315, 211316, 211317, 211318 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 0..10000 EXAMPLE a(10) = A047842(1011) = 1031; a(11) = A047842(21) = 1112; a(12) = A047842(1112) = 3112; a(100) = A047842(2011) = 102112; a(101) = A047842(1021) = 102112; a(102) = A047842(101112) = 104112. PROG (Haskell) a235775 = a047842 . a047842 (Python) def A235775(n): s = str(n) s = ''.join(str(s.count(d))+d for d in sorted(set(s))) return int(''.join(str(s.count(d))+d for d in sorted(set(s)))) # Chai Wah Wu, Feb 12 2023 CROSSREFS Sequence in context: A266673 A055473 A317526 * A262865 A213315 A345906 Adjacent sequences: A235772 A235773 A235774 * A235776 A235777 A235778 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, Jan 15 2014 STATUS approved

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Last modified December 5 05:37 EST 2023. Contains 367575 sequences. (Running on oeis4.)