A137076 Numbers k such that k and k^2 use only the digits 2, 3, 4 and 8.

2, 22, 482, 4832

Offset

1,1

Comments

Generated with DrScheme.

No additional terms up to and including 8,888,888,888. - Harvey P. Dale, May 20 2013

Links

Table of n, a(n) for n=1..4.

J. Wellons, Tables of Shared Digits [archived]

Example

4832^2 = 23348224.

Mathematica

odQ[n_]:=Module[{d=Union[IntegerDigits[n^2]]}, And@@Table[MemberQ[{2, 3, 4, 8}, d[[i]]], {i, Length[d]}]]; Flatten[Table[Select[ FromDigits/@ Tuples[ {2, 3, 4, 8}, n], odQ], {n, 10}]] (* Harvey P. Dale, May 20 2013 *)

Crossrefs

Sequence in context: A354943 A084949 A276454 * A090730 A090313 A110129

Adjacent sequences: A137073 A137074 A137075 * A137077 A137078 A137079

Keyword

base,nonn,more,changed

Author

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

Status

approved