login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A052041 Squares lacking the digit zero in their decimal expansion. 22
1, 4, 9, 16, 25, 36, 49, 64, 81, 121, 144, 169, 196, 225, 256, 289, 324, 361, 441, 484, 529, 576, 625, 676, 729, 784, 841, 961, 1156, 1225, 1296, 1369, 1444, 1521, 1681, 1764, 1849, 1936, 2116, 2916, 3136, 3249, 3364, 3481, 3721, 3844, 3969, 4225, 4356 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequence is infinite: see A075415 or A102807 for a constructive proof.

Intersection of A052382 and A000290; A168046(a(n))*A010052(a(n))=1. - Reinhard Zumkeller, Dec 01 2009

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..1000

Eric Weisstein's World of Mathematics, Zerofree [From Reinhard Zumkeller, Dec 01 2009]

MATHEMATICA

Select[Range[66]^2, FreeQ[IntegerDigits[#], 0]==True &] (* Jayanta Basu, May 25 2013 *)

CROSSREFS

Cf. A104264, A102265, A102266.

Squares: A052040, A052042, A052043. Cubes: A051750, A051751, A051832, A051833.

Sequence in context: A068854 A068867 A111704 * A018884 A050749 A096599

Adjacent sequences:  A052038 A052039 A052040 * A052042 A052043 A052044

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Dec 15 1999

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 2 08:39 EST 2021. Contains 341745 sequences. (Running on oeis4.)