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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A082921 Sort the digits of these squares into descending order and drop zeros to get primes. 1
 16, 121, 361, 1024, 1369, 1444, 1600, 1936, 2116, 2401, 3481, 3721, 3844, 5041, 6241, 7921, 8281, 8836, 10201, 11236, 12100, 12544, 13924, 15625, 16129, 17956, 18496, 20164, 21316, 21904, 22201, 22801, 33124, 33856, 34969, 36100, 38809, 39601 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 EXAMPLE a(4)=1024 because 32^2 = 1024 and 421 is prime. MATHEMATICA Select[Range[200]^2, PrimeQ[FromDigits[Reverse[Sort[DeleteCases[ IntegerDigits[ #], 0]]]]]&] (* Harvey P. Dale, Dec 02 2018 *) CROSSREFS Sequence in context: A161851 A171584 A017030 * A191902 A294140 A014765 Adjacent sequences: A082918 A082919 A082920 * A082922 A082923 A082924 KEYWORD base,nonn AUTHOR Jason Earls, May 25 2003 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 July 16 05:19 EDT 2024. Contains 374343 sequences. (Running on oeis4.)