|
| |
|
|
A006716
|
|
Squares with digits 1, 4, 9 (probably finite).
(Formerly M3369)
|
|
6
|
|
|
|
1, 4, 9, 49, 144, 441, 1444, 11449, 44944, 991494144, 4914991449, 149991994944, 9141411499911441, 199499144494999441, 9914419419914449449, 444411911999914911441, 419994999149149944149149944191494441
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
I. Vardi, Computational Recreations in Mathematica. Addison-Wesley, Redwood City, CA, 1991, p. 234.
|
|
|
LINKS
|
Table of n, a(n) for n=1..17.
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
A. Ottens, The arithmetic-digits-squares-three.digits problem
Eric Weisstein's World of Mathematics, Square Number
|
|
|
CROSSREFS
|
Subsequence of A019544.
Cf. A027675 (square roots), A061269.
Sequence in context: A061867 A019544 A053059 * A068809 A110481 A030088
Adjacent sequences: A006713 A006714 A006715 * A006717 A006718 A006719
|
|
|
KEYWORD
|
nonn,base,fini
|
|
|
AUTHOR
|
N. J. A. Sloane.
|
|
|
EXTENSIONS
|
a(13) corrected by Neven Juric (neven.juric(AT)apis-it.hr), May 14, 2003
|
|
|
STATUS
|
approved
|
| |
|
|
