id:A105985 - OEIS Search Results

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Near-repdigit semiprimes with 4 as repeated digit.

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445, 446, 447, 454, 4414, 4442, 4443, 4449, 4474, 44441, 44494, 444441, 444494, 4444441, 4444449, 44444441, 44444446, 44444447, 444444449, 444444454, 4444444441, 4444444443, 44444444443, 44444444446, 44444444449, 444444444447 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(2)=446 is a term because 446 is a semiprime and all digits are equal to 4 except one.`
	CROSSREFS	`Sequence in context: A043507 A098255 A028460 this_sequence A160583 A025354 A025346` `Adjacent sequences: A105982 A105983 A105984 this_sequence A105986 A105987 A105988`
	KEYWORD	`base,nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 29 2005`

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.

AT&T Labs Research