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A195269 Smallest n such that 3^n contains n consecutive 0's in its decimal representation. 12
10, 35, 148, 332, 540, 540, 7722, 22793, 107189, 107189, 513335, 1847534, 5756981, 32023025, 82011444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

No more terms < 10^8. - Bert Dobbelaere, Mar 20 2019

LINKS

Table of n, a(n) for n=1..15.

Programming contest in Zealint's blog (in Russian)

PROG

(Python)

def A195269(n):

....m, s = 1, '0'*n

....for i in range(1, 10**9):

........m *= 3

........if s in str(m):

............return i

....return "search limit reached." # Chai Wah Wu, Dec 11 2014

CROSSREFS

Cf. A131552, A131551, A131550, A131549, A131548,  A131547,  A131546, A131545,  A131544.

Sequence in context: A048507 A240267 A221907 * A070755 A126995 A271732

Adjacent sequences:  A195266 A195267 A195268 * A195270 A195271 A195272

KEYWORD

nonn,base,more

AUTHOR

Max Alekseyev, Sep 14 2011

EXTENSIONS

a(15) from Bert Dobbelaere, Mar 20 2019

STATUS

approved

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Last modified February 28 10:22 EST 2020. Contains 332323 sequences. (Running on oeis4.)