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A098121 Harshad numbers that are also perfect powers. 0
1, 4, 8, 9, 27, 36, 81, 100, 144, 216, 225, 243, 324, 400, 441, 512, 576, 900, 1000, 1296, 1521, 1728, 1764, 2025, 2304, 2401, 2601, 2704, 2916, 3600, 3969, 4225, 4356, 4624, 4913, 5184, 5832, 6084, 6400, 7056, 7744, 7776, 8000, 8100, 9216, 10000, 10404 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..47.

EXAMPLE

1296 is a term because 6^4 = 1296 and 1+2+9+6 = 18 and 1296/18 = 72.

CROSSREFS

Cf. A001597, A005349.

Sequence in context: A114377 A115697 A075783 * A115656 A076705 A306916

Adjacent sequences:  A098118 A098119 A098120 * A098122 A098123 A098124

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls, Sep 24 2004

STATUS

approved

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Last modified July 20 22:54 EDT 2019. Contains 325189 sequences. (Running on oeis4.)