A136979 Numbers k such that k and k^2 use only the digits 1, 2, 3, 6 and 7.

1, 6, 11, 26, 61, 111, 131, 276, 611, 2761, 11731, 12776, 27611, 36361, 36376, 37111, 116731, 116761, 161761, 163131, 611361, 613361, 1166731, 1166761, 1171376, 1273276, 1277761, 1327261, 1616376, 1636361, 1662261, 3336731, 3371376, 3636361, 6113376, 11237111, 11237131, 11666731, 11666761, 12771731, 12777761, 13272631, 16632111

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..265

J. Wellons, Tables of Shared Digits [archived]

Example

163132361361361^2 = 26612167323333667337223772321.

Crossrefs

Sequence in context: A061203 A263419 A140359 * A007433 A061725 A105708

Adjacent sequences: A136976 A136977 A136978 * A136980 A136981 A136982

Keyword

base,nonn

Author

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

Status

approved