A137038 Numbers k such that k and k^2 use only the digits 1, 3, 6, 7 and 8.

1, 6, 131, 876, 881, 8131, 8876, 11731, 13181, 18376, 18381, 37131, 88776, 116881, 117181, 117776, 133181, 183776, 336731, 888131, 1366881, 1373376, 3336731, 3371376, 3713181, 6113376, 7866881, 11761731, 13167131, 13717776, 13718131, 13738181, 33336731, 33367181, 37118376, 37133181, 61383131, 78668776, 87367681, 87616881, 117383181

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..179

J. Wellons, Tables of Shared Digits [archived]

Example

878161817313181^2 = 771168177386788681117836338761.

Crossrefs

Sequence in context: A302770 A337971 A281402 * A024276 A137037 A101131

Adjacent sequences: A137035 A137036 A137037 * A137039 A137040 A137041

Keyword

base,nonn,changed

Author

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

Status

approved