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!)
 A189056 Numbers having in decimal representation at least one common digit with their squares. 8
 0, 1, 5, 6, 10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 23, 25, 26, 27, 28, 30, 31, 32, 35, 36, 37, 40, 41, 42, 43, 45, 46, 48, 49, 50, 51, 52, 55, 56, 60, 61, 63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 78, 80, 81, 82, 83, 85, 86, 87, 89, 90, 91, 93, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Complement of A029783; A076493(a(n)) > 0. A258682(a(n)) < a(n)^2. - Reinhard Zumkeller, Jun 07 2015 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 MATHEMATICA Select[Range[0, 120], Length[Intersection[IntegerDigits[#], IntegerDigits[ #^2]]]>0&] (* Harvey P. Dale, Aug 28 2012 *) PROG (Haskell) a189056 n = a189056_list !! (n-1) a189056_list = 0 : filter (\x -> a258682 x /= x ^ 2) [1..] -- Reinhard Zumkeller, Jun 07 2015, Apr 16 2011 (PARI) isok(n) = (n==0) || #setintersect(Set(digits(n)), Set(digits(n^2))); \\ Michel Marcus, Jun 13 2015 CROSSREFS Cf. A029783, A076493, A258682. Sequence in context: A019125 A019205 A191472 * A247561 A273401 A042958 Adjacent sequences:  A189053 A189054 A189055 * A189057 A189058 A189059 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, Apr 16 2011 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 June 7 05:20 EDT 2020. Contains 334837 sequences. (Running on oeis4.)