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 A004287 Least positive multiple of n written in base 7 using only 0 and 1. 2
 0, 1, 11, 111, 11, 101, 111111, 10, 11, 1011, 101, 10011, 111111, 1011, 110, 11001, 1111, 100111, 1101111, 111, 1111, 1110, 11101, 101011, 111111, 101, 111001, 1011, 110, 1111111, 1011111, 100111, 11011, 10011, 100111, 1010, 1101111 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Chai Wah Wu, Table of n, a(n) for n = 0..10000 PROG (Python) def A004287(n): ....if n > 0: ........for i in range(1, 2**n): ............s = bin(i)[2:] ............if not int(s, 7) % n: ................return int(s) ....return 0 # Chai Wah Wu, Dec 30 2014 CROSSREFS Sequence in context: A266513 A055016 A259372 * A061493 A093788 A327992 Adjacent sequences:  A004284 A004285 A004286 * A004288 A004289 A004290 KEYWORD nonn,base AUTHOR EXTENSIONS Added a(0) from Chai Wah Wu, Dec 30 2014 STATUS approved

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Last modified October 17 22:36 EDT 2019. Contains 328134 sequences. (Running on oeis4.)