login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A264604 a(n) = smallest square which is a concatenation of n and m, where m is a decimal number. 2
16, 25, 36, 49, 529, 64, 729, 81, 961, 100, 1156, 121, 1369, 144, 1521, 169, 1764, 1849, 196, 2025, 2116, 225, 23104, 24336, 256, 26244, 27225, 289, 2916, 3025, 3136, 324, 3364, 3481, 35344, 361, 3721, 3844, 3969, 400, 41209, 4225, 4356, 441, 45369, 4624, 4761, 484, 49284, 5041, 5184, 529, 5329, 5476 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

m can be 0 but not 00, so a(9) = 961, in contrast to A030666(9) = 900.

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..10000

MAPLE

# Computes 10000 terms

for b from 1 to 10000 do

sw1:=-1;

for n from 0 to 1000000 do

len:=length(n);

if len=0 then len:=1; fi;

t2:=10^len*b+n;

if issqr(t2) then sw1:=1; lprint(b, t2); break; fi; od:

if sw1 < 0 then lprint("failed at", b); lprint(b, -1);  fi;

od:

CROSSREFS

Similar to A030666 but with a more stringent rule.

Sequence in context: A175689 A030666 A030676 * A348235 A218439 A192689

Adjacent sequences:  A264601 A264602 A264603 * A264605 A264606 A264607

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Nov 24 2015

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 26 11:47 EST 2022. Contains 358359 sequences. (Running on oeis4.)