id:A077312 - OEIS Search Results

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Smallest k such that the concatenation of natural numbers from (n+1) to k is a multiple of n.

+0
3

2, 4, 5, 6, 10, 8, 16, 12, 17, 20, 21, 20, 35, 30, 20, 20, 19, 26, 22, 40, 41, 32, 40, 36, 50, 48, 53, 44, 54, 50, 141, 52, 44, 36, 55, 44, 1035, 90, 77, 60, 101, 62, 47, 76, 80, 88, 97, 68, 145, 100, 53, 148, 146, 80, 65, 76, 60, 108, 103, 80, 107, 102, 108, 104, 115, 98 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`Do[k = n + 1; s = ToString[k]; While[Mod[ToExpression[s], n] > 0, k++; s = s <> ToString[k]]; Print[k], {n, 1, 100}] (Propper)`
	CROSSREFS	`Cf. A077310, A077311.` `Sequence in context: A136585 A122721 A014224 this_sequence A140779 A117890 A108853` `Adjacent sequences: A077309 A077310 A077311 this_sequence A077313 A077314 A077315`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 03 2002`
	EXTENSIONS	`More terms from Ryan Propper (rpropper(AT)stanford.edu), Oct 10 2005`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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