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A086013 Number of 5's in decimal expansion of n^2. 11
0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,76

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

MATHEMATICA

DigitCount[(Range[0, 110])^2, 10, 5] (* Harvey P. Dale, Jul 26 2016 *)

PROG

(PARI) A086013(n)=#select(d->d==5, digits(n^2)) \\ M. F. Hasler, Feb 21 2016

CROSSREFS

Cf. 0's A086008, 1's A086009, 2's A086010, 3's A086011, 4's A086012, 6's A086014, 7's A086015, 8's A086016, 9's A086017.

Cf. A269245 for the n^3 analog.

Sequence in context: A244600 A288558 A269241 * A167687 A064692 A286106

Adjacent sequences:  A086010 A086011 A086012 * A086014 A086015 A086016

KEYWORD

base,nonn

AUTHOR

Jason Earls, Jul 07 2003

STATUS

approved

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Last modified June 16 10:03 EDT 2019. Contains 324152 sequences. (Running on oeis4.)