id:A011539 - OEIS Search Results

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"9ish numbers": decimal representation contains at least one nine.

+0
6

9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 109, 119, 129, 139, 149, 159, 169, 179, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 209, 219, 229, 239, 249, 259, 269, 279, 289, 290, 291, 292, 293, 294, 295 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The 9ish numbers are closed under dismal multiplication. The dismal primes (A087097) are a subset.`
	LINKS	`D. Applegate, C program for dismal arithmetic and number theory` `Index entries for sequences related to dismal arithmetic`
	EXAMPLE	`E.g. 9, 19, 69, 90, 96, 99 and 1234567890 are all 9ish.`
	CROSSREFS	`Cf. A087062 A088924.` `Sequence in context: A037085 A088478 A088923 this_sequence A088479 A043525 A031499` `Adjacent sequences: A011536 A011537 A011538 this_sequence A011540 A011541 A011542`
	KEYWORD	`nonn,base`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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