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A051823 Number of numbers below 10^n with nonzero multiplicative digital root 3. 1
1, 8, 48, 288, 1736, 10366, 63911, 435756, 3703209, 40131451, 482893994, 5700587521, 63022146850, 649554554509, 6315823743218, 59044525222412 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

William Mayne, sci.math, Jun 15 1991

LINKS

Table of n, a(n) for n=1..16.

FORMULA

# { i : 10^(n-1) < i < 10^n and A051802(i)=3 }

CROSSREFS

Cf. A051802, A051805, A051814.

Sequence in context: A079745 A079758 A270576 * A037507 A037690 A180031

Adjacent sequences:  A051820 A051821 A051822 * A051824 A051825 A051826

KEYWORD

nonn,base,hard

AUTHOR

Dan Hoey, Dec 09 1999

STATUS

approved

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Last modified November 14 01:24 EST 2019. Contains 329108 sequences. (Running on oeis4.)