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A129287 Number of Harshad numbers between 10^n and 10^n + 100. 0
29, 30, 31, 29, 30, 28, 29, 30, 30, 29, 28, 28, 29, 30, 30, 29, 29, 28, 30, 30, 31, 29, 29, 28, 29, 30, 30, 29, 28, 28, 29, 30, 31, 29, 29, 28, 30, 30, 30, 29, 29, 28, 29, 30, 30, 29, 28, 28, 30, 30, 31, 29, 29, 28, 29, 30, 30, 29, 29, 28, 29, 30, 30, 29, 29, 28, 30, 30, 31 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

COMMENTS

Will every term be between 28 and 31 inclusive?

REFERENCES

J. Earls, Red Zen, Lulu Press, NY, 2006, pp. 145 - 146. ISBN: 978-1-4303-2017-3.

LINKS

Table of n, a(n) for n=3..71.

EXAMPLE

There are exactly 29 Harshad numbers between 1000 and 1100, so the first term is 29.

CROSSREFS

Cf. A005349.

Sequence in context: A210267 A210309 A165850 * A007642 A295749 A022399

Adjacent sequences:  A129284 A129285 A129286 * A129288 A129289 A129290

KEYWORD

nonn,base

AUTHOR

Jason Earls, May 26 2007

STATUS

approved

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Last modified December 14 01:33 EST 2019. Contains 329978 sequences. (Running on oeis4.)