This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A171586 Squares divisible by at least two of their distinct digits >1. 1
 36, 324, 784, 1024, 1296, 1764, 2304, 2500, 2704, 2916, 3249, 3600, 3969, 4356, 4624, 5184, 6084, 6724, 7056, 8464, 9216, 11664, 12544, 12996, 13689, 13924, 15876, 16384, 17424, 18496, 19044, 20164, 20736, 21904, 22500, 23104, 23409, 23716 (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 36=3*12=6*6 324=3*108=4*81 784=7*112=4*198. MATHEMATICA dddQ[n_]:=Module[{dv=Union[Select[IntegerDigits[n], #>1&]]}, Count[n/dv, _?IntegerQ]>1]; Select[Range[200]^2, dddQ] (* Harvey P. Dale, Oct 20 2018 *) CROSSREFS Cf. A161851, A171584. Sequence in context: A092643 A045786 A237128 * A017594 A014800 A213124 Adjacent sequences:  A171583 A171584 A171585 * A171587 A171588 A171589 KEYWORD base,nonn AUTHOR Zak Seidov, Dec 12 2009 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.

Last modified October 21 06:25 EDT 2019. Contains 328292 sequences. (Running on oeis4.)