id:A051829 - OEIS Search Results

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Number of numbers below 10^n with nonzero multiplicative digital root 9.

+0
2

1, 5, 30, 210, 1850, 19528, 233289, 2805652, 31522803, 326897695, 3190607915, 30250443755, 287335303424, 2785929699350, 27611310448037, 276727430606458 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`William Mayne, sci.math, Jun 15 1991`
	FORMULA	`# { i : 10^(n-1) < i < 10^n and A051802(i)=9 }`
	CROSSREFS	`Cf. A051802, A051811, A051820.` `Sequence in context: A091122 A029587 A001720 this_sequence A058247 A137965 A129695` `Adjacent sequences: A051826 A051827 A051828 this_sequence A051830 A051831 A051832`
	KEYWORD	`nonn,base,hard`
	AUTHOR	`Dan Hoey (Hoey(AT)AIC.NRL.Navy.Mil), Dec 09 1999`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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