id:A036307 - OEIS Search Results

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Composite numbers n such that digits of prime factors of n are either 1 or 7.

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49, 77, 119, 121, 187, 289, 343, 497, 539, 781, 833, 847, 1207, 1309, 1331, 2023, 2057, 2401, 3179, 3479, 3773, 4913, 5041, 5467, 5831, 5929, 7819, 8197, 8449, 8591, 9163, 9317, 12287, 12439, 12881, 13277, 14161, 14399, 14641, 16807, 18989, 19547 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A003599, A036302-A036325.` `Sequence in context: A038510 A063163 A103216 this_sequence A056938 A106311 A006832` `Adjacent sequences: A036304 A036305 A036306 this_sequence A036308 A036309 A036310`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Dec 15 1998.`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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