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

 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!)
 A039820 Numbers whose square contains the same digit more than 2/3 of the time and does not end in 0. 1
 1, 2, 3, 38, 212, 2538, 6888, 66592, 100001, 100002, 100003, 200001, 200002, 210771, 300001, 1000001, 1000002, 1000003, 1000004, 1000005, 1055041, 2000001, 2000002, 2000003, 2000005, 2059962, 2131888, 2356384, 3000001, 3000002 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Giovanni Resta, Table of n, a(n) for n = 1..6500 EXAMPLE 3082207^2 = 9499999990849. MATHEMATICA Select[Range[300000], Mod[#, 10] > 0 && Max@ DigitCount[#^2] > (2/3) IntegerLength[#^2] &] (* Giovanni Resta, Jul 29 2018 *) CROSSREFS Sequence in context: A119448 A041329 A060813 * A331204 A153745 A076724 Adjacent sequences: A039817 A039818 A039819 * A039821 A039822 A039823 KEYWORD base,hard,nonn AUTHOR Erich Friedman, Apr 29 2001 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.

Last modified December 4 21:02 EST 2022. Contains 358570 sequences. (Running on oeis4.)