A137037 Numbers k such that k and k^2 use only the digits 1, 3, 6 and 7.

1, 6, 131, 11731, 3336731, 3371376, 6113376, 33336731, 611361731

Offset

1,2

Comments

Generated with DrScheme.

Links

Table of n, a(n) for n=1..9.

Jonathan Wellons, Tables of Shared Digits [archived]

Example

611361731^2 = 373763166131316361.

Crossrefs

Sequence in context: A281402 A137038 A024276 * A101131 A256239 A174250

Adjacent sequences: A137034 A137035 A137036 * A137038 A137039 A137040

Keyword

base,nonn,more

Author

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

Status

approved