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!)
 A086011 Number of 3's in decimal expansion of n^2. 11
 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 2, 1, 2, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,57 LINKS G. C. Greubel, Table of n, a(n) for n = 0..1000 MATHEMATICA DigitCount[(Range[0, 100])^2, 10, 3] (* G. C. Greubel, Dec 13 2016 *) PROG (PARI) A086011(n)=#select(d->d==3, digits(n^2)) \\ M. F. Hasler, Feb 21 2016 CROSSREFS Cf. 0's A086008, 1's A086009, 2's A086010, 4's A086012, 5's A086013, 6's A086014, 7's A086015, 8's A086016, 9's A086017. Cf. A269243 for the n^3 analog. Sequence in context: A064391 A236470 A206589 * A124760 A077619 A030600 Adjacent sequences:  A086008 A086009 A086010 * A086012 A086013 A086014 KEYWORD base,nonn AUTHOR Jason Earls, Jul 07 2003 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 July 25 14:49 EDT 2021. Contains 346290 sequences. (Running on oeis4.)