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A051822 Number of numbers below 10^n with nonzero multiplicative digital root 2. 2
1, 16, 224, 2613, 27458, 271155, 2620040, 25457267, 251964768, 2537869322, 25777827199, 261509437991, 2634407279895, 26321038031960, 261379965909359, 2589357329707966 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
REFERENCES
William Mayne, sci.math, Jun 15 1991
LINKS
FORMULA
# { i : 10^(n-1) < i < 10^n and A051802(i)=2 }
CROSSREFS
Sequence in context: A093746 A118779 A209444 * A017438 A098301 A337900
KEYWORD
nonn,base,hard
AUTHOR
Dan Hoey, Dec 09 1999
STATUS
approved

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Last modified July 19 17:03 EDT 2024. Contains 374410 sequences. (Running on oeis4.)