id:A030097 - OEIS Search Results

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Numbers n such that n^2 has only even digits.

+0
2

0, 2, 8, 20, 22, 68, 78, 80, 92, 162, 168, 200, 202, 220, 262, 298, 478, 492, 498, 668, 680, 780, 800, 898, 908, 920, 932, 1422, 1492, 1498, 1620, 1680, 1692, 2000, 2002, 2020, 2022, 2192, 2200, 2202, 2498, 2502, 2578, 2620, 2832, 2878, 2978 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`Select[ Range[ 3000 ], Union[ EvenQ[ IntegerDigits[ #^2 ] ] ] == {True} & ]`
	CROSSREFS	`Cf. A030098.` `Sequence in context: A074797 A129445 A082821 this_sequence A136904 A043002 A108180` `Adjacent sequences: A030094 A030095 A030096 this_sequence A030098 A030099 A030100`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com)`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research