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A077676
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Squares using only squarefree digits (2, 3, 5, 6, 7).
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3
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25, 36, 225, 256, 576, 625, 676, 5625, 5776, 7225, 27225, 27556, 37636, 55225, 65536, 75625, 225625, 226576, 235225, 265225, 266256, 275625, 276676, 367236, 525625, 553536, 732736, 765625, 767376, 2322576, 2325625, 2356225, 2637376, 2673225
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(n) is == 5 or 6 (mod 10).
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LINKS
| Harvey P. Dale, Table of n, a(n) for n = 1..600
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MATHEMATICA
| sfdsQ[n_]:=Module[{idn=DigitCount[n]}, idn[[1]]==idn[[4]]==idn[[8]] == idn[[9]]==idn[[10]]==0]; Select[Range[2000]^2, sfdsQ] (* From Harvey P. Dale, Oct 09 2011 *)
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CROSSREFS
| Cf. A077674, A077675, A006716. Different from A077437.
Sequence in context: A066217 A205644 A077437 * A030671 A030681 A167363
Adjacent sequences: A077673 A077674 A077675 * A077677 A077678 A077679
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 16 2002
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EXTENSIONS
| Corrected and extended by Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 28 2003
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