The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A061863 Numbers that are the product of the squares of some subset of their digits. 2
 0, 1, 25, 36, 784, 1764, 2916, 36864, 46656, 82944, 746496, 777924, 49787136, 329204736, 429981696, 914457600, 3186376704, 3657830400, 3749847696, 3869835264, 7169347584, 14999390784, 19297377225, 22658678784, 149824733184, 166659897600, 247669456896 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Charlie Neder, Table of n, a(n) for n = 1..248 (Terms < 10^36) EXAMPLE 784 = (7.4)^2 MATHEMATICA Join[{0}, Select[Range[100000], MemberQ[Times@@@(Subsets[IntegerDigits[#], IntegerLength[#] -1]^2), #]&]] (* To generate all of the terms of the sequence shown above, increase the "Range" to 10^11, but the program will run a very long time. *) (* Harvey P. Dale, Nov 25 2011 *) CROSSREFS Sequence in context: A167363 A035383 A179803 * A079270 A253025 A127022 Adjacent sequences: A061860 A061861 A061862 * A061864 A061865 A061866 KEYWORD base,nice,nonn AUTHOR Erich Friedman, Jun 23 2001 EXTENSIONS More terms from Naohiro Nomoto, Jun 25 2001 a(24)-a(27) from Charlie Neder, Dec 21 2018 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 June 16 05:29 EDT 2024. Contains 373423 sequences. (Running on oeis4.)