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A098128 Perfect powers whose products of nonzero digits are also perfect powers. +0
1
1, 4, 8, 9, 49, 81, 128, 144, 289, 343, 400, 441, 484, 841, 900, 1024, 1331, 1444, 2048, 2209, 2401, 2809, 3249, 3364, 4096, 4900, 7744, 8000, 8100, 8192, 8281, 8649, 9409, 9604, 10404, 11236, 11449, 11664, 11881, 13689, 13924, 14400, 14884, 16384, 16641 (list; graph; listen)
OFFSET

1,2

EXAMPLE

484 is in the sequence because 22^2 = 484 and 4*8*4 = 128 = 2^7.

CROSSREFS

Cf. A001597.

Adjacent sequences: A098125 A098126 A098127 this_sequence A098129 A098130 A098131

Sequence in context: A035132 A077572 A083807 this_sequence A140820 A118895 A110811

KEYWORD

base,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Sep 26 2004

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.


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