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A053902
Numbers k such that k^2 contains only digits {1,5,6}.
2
1, 4, 34, 81, 334, 746, 2581, 3334, 12869, 33334, 39581, 81619, 333334, 1245454, 1249666, 3333334, 12496666, 33333334, 333333334, 2261749666, 3333333334, 3939100869, 12851113246, 22706069919, 33333333334, 78493000746
OFFSET
1,2
CROSSREFS
Cf. A053903.
Sequence in context: A365537 A281827 A284812 * A054464 A002101 A241231
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Mar 15 2000
EXTENSIONS
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
STATUS
approved