A137033 Numbers k such that k and k^2 use only the digits 1, 3, 5, 6 and 7.

1, 6, 56, 76, 131, 576, 756, 1156, 1331, 3656, 5756, 7166, 11731, 13331, 57716, 57756, 75576, 117331, 133331, 337131, 371156, 577716, 611156, 717756, 731666, 755756, 1333331, 1771331, 3336731, 3367131, 3371376, 6113376, 7167131, 11736156, 13333331, 17657166, 33336731, 33671376, 55777556, 71537131, 71667131, 73316666, 75576156, 75717576

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..258

J. Wellons, Tables of Shared Digits [archived]

Example

731515657635376^2 = 535115157365716633567766661376.

Crossrefs

Sequence in context: A140790 A335217 A335199 * A045526 A164579 A137034

Adjacent sequences: A137030 A137031 A137032 * A137034 A137035 A137036

Keyword

base,nonn

Author

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

Status

approved