This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A104379 a(n) = square root of digital reversal of A102859(n)^2. 0
 0, 1, 2, 3, 1, 11, 21, 31, 2, 12, 22, 26, 3, 13, 99, 33, 1, 101, 201, 301, 11, 111, 211, 311, 21, 121, 221, 31, 2, 102, 202, 12, 112, 212, 22, 122, 26, 264, 3, 103, 307, 13, 113, 99, 836, 33, 1, 1001, 2001, 3001, 101, 1101, 2101, 3101, 201, 1201, 2201, 301, 1301, 11, 1011 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS The sequence is inverse to A102859. LINKS MATHEMATICA r[n_] := FromDigits@ Reverse@ IntegerDigits@ n; Sqrt@ r[#^2] & /@ Select[Range[0, 1101], IntegerQ@ Sqrt@ r[#^2] &] (* Michael De Vlieger, Sep 21 2015 *) CROSSREFS Cf. A102859. Sequence in context: A174017 A178081 A129969 * A142714 A276012 A176701 Adjacent sequences:  A104376 A104377 A104378 * A104380 A104381 A104382 KEYWORD nonn,base AUTHOR Zak Seidov, Mar 03 2005 EXTENSIONS 0 inserted, and name replaced with formula, by Jon E. Schoenfield, Sep 20 2015 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 18 18:05 EST 2018. Contains 317323 sequences. (Running on oeis4.)