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 A215733 a(n) is the first digit to appear n times in succession in a power of 3. 14
 1, 7, 8, 5, 5, 8, 2, 1, 2, 2, 2, 4, 5, 8, 2, 4, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS PROG (Python) def A215733(n): ....l, x = [str(d)*n for d in range(10)], 1 ....for m in range(10**9): ........s = str(x) ........for k in range(10): ............if l[k] in s: ................return k ........x *= 3 ....return 'search limit reached' # Chai Wah Wu, Dec 17 2014 CROSSREFS Cf. A215727, A045875, A215732. Sequence in context: A217516 A071420 A031139 * A226750 A021564 A021060 Adjacent sequences:  A215730 A215731 A215732 * A215734 A215735 A215736 KEYWORD nonn,base,more AUTHOR V. Raman, Aug 22 2012 EXTENSIONS a(12) from Chai Wah Wu, Dec 17 2014 a(13)-a(14) from Giovanni Resta, Apr 20 2016 a(15) from Bert Dobbelaere, Mar 04 2019 a(16)-a(17) from Bert Dobbelaere, Mar 20 2019 STATUS approved

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Last modified May 29 04:33 EDT 2020. Contains 334697 sequences. (Running on oeis4.)