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A085980 Number of 6's in decimal expansion of prime(n). 10
0, 0, 0, 0, 0, 0, 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, 0, 1, 1, 0, 0, 0, 0, 0, 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, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

a085980 = count6 0 . a000040 where

   count6 c x | d == 6    = if x < 10 then c + 1 else count6 (c + 1) x'

              | otherwise = if x < 10 then c else count6 c x'

              where (x', d) = divMod x 10

-- Reinhard Zumkeller, Apr 08 2014

CROSSREFS

Cf. 0's A085974, 1's A085975, 2's A085976, 3's A085977, 4's A085978, 5's A085979, 7's A085981, 8's A085982, 9's A085983.

Sequence in context: A011733 A011732 A011731 * A023974 A011730 A101637

Adjacent sequences:  A085977 A085978 A085979 * A085981 A085982 A085983

KEYWORD

base,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 06 2003

STATUS

approved

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Last modified March 29 15:04 EDT 2017. Contains 284272 sequences.