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 A103369 Number in the 2-digitaddition sequence at which the eventually periodic part starts. 4
 1, 4, 37, 4, 89, 89, 1, 89, 37, 1, 4, 89, 1, 89, 16, 16, 89, 37, 1, 20, 89, 89, 1, 20, 89, 16, 89, 1, 89, 37, 1, 1, 37, 89, 89, 89, 37, 58, 37, 16, 89, 42, 89, 1, 89, 89, 37, 89, 1, 89, 16, 89, 89, 89, 89, 37, 37, 58, 37, 89, 37, 16, 89, 89, 37, 89, 89, 1, 16, 1, 89, 89, 58 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(A007770(n)) = 1; a(A031177(n)) > 1. - Reinhard Zumkeller, Mar 16 2013 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, Digitaddition EXAMPLE The 2-digitaddition sequence for n = 3 is {3, 9, 81, 65, 61, 37, 58, 89, 145, 42, 20, 4, 16, 37, ...}, so a(3) = 37. PROG (Haskell) a103369 = until (`elem` a039943_list) a003132 a103369_list = map a103369 [1..] -- Reinhard Zumkeller, Oct 17 2011, Aug 24 2011 CROSSREFS Cf. A007770, A031176, A003132, A039943. Sequence in context: A061024 A297105 A222517 * A031189 A045555 A297803 Adjacent sequences:  A103366 A103367 A103368 * A103370 A103371 A103372 KEYWORD nonn,base AUTHOR Eric W. Weisstein, Feb 02 2005 STATUS approved

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Last modified January 29 08:04 EST 2020. Contains 331337 sequences. (Running on oeis4.)