id:A116441 - OEIS Search Results

Search: id:A116441

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Numbers n which when sandwiched between two 6's give a multiple of n.

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1, 2, 3, 6, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 137, 146, 219, 274, 411, 438, 822, 9091, 19802, 29703, 59406, 909091, 5882353, 10989011, 12145749, 12987013, 13986014, 14354067, 15037594, 20979021, 21978022, 22556391 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`39 belongs since 6396 is a multiple 39 (39*164).`
	MATHEMATICA	`f[k_, d_] := Flatten@Table[Select[Divisors[k(10^(i + 1) + 1)], IntegerLength[ # ] == i &], {i, d}]; f[6, 8] (Chandler*)`
	CROSSREFS	`Cf. A116436-A116444.` `Sequence in context: A125714 A004038 A105614 this_sequence A116051 A124593 A125882` `Adjacent sequences: A116438 A116439 A116440 this_sequence A116442 A116443 A116444`
	KEYWORD	`base,nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 15 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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