The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A062893 Number of squares that can be obtained by using some or all of the digits of n. 0
 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 2, 0, 1, 2, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 2, 0, 0, 1, 0, 0, 0, 0, 1, 2, 2, 1, 1, 3, 1, 1, 1, 1, 1, 3, 2, 2, 2, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,11 LINKS EXAMPLE a(169) = 6 the squares obtained by using the digits are 1,9,16, 169, 196, 961. MATHEMATICA Table[Length[Select[Union[Drop[FromDigits/@Flatten[Permutations/@ Subsets[IntegerDigits[n]], 1], 1]], IntegerQ[Sqrt[#]] &]], {n, 0, 104}] (* Jayanta Basu, May 17 2013 *) CROSSREFS Sequence in context: A103765 A307610 A125029 * A328512 A302041 A302031 Adjacent sequences:  A062890 A062891 A062892 * A062894 A062895 A062896 KEYWORD base,nonn,easy AUTHOR Amarnath Murthy, Jun 29 2001 EXTENSIONS Corrected and extended by Larry Reeves (larryr(AT)acm.org) and Dean Hickerson, Jul 02 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 18 23:06 EDT 2020. Contains 337174 sequences. (Running on oeis4.)