id:A108614 - OEIS Search Results

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Semiprimes with non-semiprimes digits (no digits 4,6,9 in semiprimes).

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10, 15, 21, 22, 25, 33, 35, 38, 51, 55, 57, 58, 77, 82, 85, 87, 111, 115, 118, 121, 122, 123, 133, 155, 158, 177, 178, 183, 185, 187, 201, 202, 203, 205, 213, 215, 217, 218, 221, 235, 237, 253, 278, 287, 301, 302, 303, 305, 321, 323, 327, 335, 355, 358, 371 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Complement of A107342 in the class of semiprimes. Cf. A107342 Semiprimes with semiprime digits.`
	MATHEMATICA	`cnd[n_]:=Plus@@Last/@FactorInteger[n]==2&&Union[FreeQ[IntegerDigits[n], # ]&/@{4, 6, 9}]=={True}; Select[Range[600], cnd[ # ]&]`
	CROSSREFS	`Cf. A107342.` `Adjacent sequences: A108611 A108612 A108613 this_sequence A108615 A108616 A108617` `Sequence in context: A055986 A045161 A105156 this_sequence A115708 A068992 A098564`
	KEYWORD	`nonn,base`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jun 13 2005`

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Last modified January 8 02:43 EST 2009. Contains 152824 sequences.

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