A027679 When squared gives number composed of digits {2,4,8} with each of these digits appearing at least once.

168, 478, 2878, 210912978, 15647628653832, 1511583350076478, 6548620039541478, 669644852476481662, 20597146608802018338, 53710727465081333454522, 2069416058768323727702022, 149140498954591218312271662, 20598117118436403877526792022

Offset

1,1

Links

Table of n, a(n) for n=1..13.

Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Patrick De Geest, Palindromic Squares

H. Mishima, Squares consisted of 3 different digits.

A. Ottens, The arithmetic-digits-squares-three.digits problem

Eric Weisstein's World of Mathematics, Square Number.

Crossrefs

Cf. A027678.

Sequence in context: A303082 A247721 A342427 * A137863 A266808 A234738

Adjacent sequences: A027676 A027677 A027678 * A027680 A027681 A027682

Keyword

nonn,base

Author

Patrick De Geest

Extensions

One more term from Jon E. Schoenfield, Sep 04 2006

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 19 2007

Title improved by Sean A. Irvine, Nov 24 2019

a(12)-a(13) from Zhao Hui Du, Mar 09 2024

Status

approved