id:A093948 - OEIS Search Results

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Primes of the form 9*10^n - 1.

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89, 8999, 89999999, 89999999999999999999, 899999999999999999999999999999, 89999999999999999999999999999999999999, 89999999999999999999999999999999999999999999999999999999999999999999999999999999\ 99999999999999 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Equivalently, primes of the form 810^n + 9R_n, where R_n is the repunit (A002275) of length n.`
	CROSSREFS	`Cf. A056725 (corresponding n).` `Sequence in context: A017752 A100419 A020472 this_sequence A116254 A086695 A056568` `Adjacent sequences: A093945 A093946 A093947 this_sequence A093949 A093950 A093951`
	KEYWORD	`nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Apr 17 2004`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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