A136972 Numbers k such that k and k^2 use only the digits 1, 2, 3, 4 and 9.

1, 2, 3, 11, 12, 21, 111, 139, 212, 339, 1111, 1193, 4943, 11132, 12212, 14139, 14943, 21193, 43923, 49229, 119132, 122193, 141111, 149139, 221911, 439229, 492239, 499423, 1192193, 1221193, 1393239, 2222911, 2234143, 3491911, 4911123, 4913443, 4929423, 4944132, 11132921, 11929423, 12214423, 14122143, 14912911, 14914132, 21194132

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..451

J. Wellons, Tables of Shared Digits [archived]

Example

493912149214943^2 = 243949211142124119131214493249.

Crossrefs

Sequence in context: A212129 A172409 A062936 * A227764 A135115 A107402

Adjacent sequences: A136969 A136970 A136971 * A136973 A136974 A136975

Keyword

base,nonn

Author

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

Status

approved