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A053059
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Squares whose product of digits is also a nonzero square.
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6
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1, 4, 9, 49, 144, 289, 441, 1444, 7744, 11236, 11449, 11664, 11881, 13689, 14884, 16384, 16641, 19881, 21316, 26896, 28224, 29241, 29929, 31684, 36481, 38416, 41616, 42436, 42849, 43264, 43681, 44944, 48841, 49284, 55696, 69169, 76176
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000
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LINKS
| M. L. Perez et al., eds., Smarandache Notions Journal
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CROSSREFS
| A061867 allows zeros. Cf. A000290.
Sequence in context: A055812 A061867 A019544 * A006716 A068809 A110481
Adjacent sequences: A053056 A053057 A053058 * A053060 A053061 A053062
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KEYWORD
| easy,base,nonn
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AUTHOR
| Felice Russo (frusso(AT)micron.com), Feb 25 2000
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EXTENSIONS
| More terms from James A. Sellers (sellersj(AT)math.psu.edu), Feb 28 2000
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