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A085983 Number of 9's in decimal expansion of prime(n). 10
0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 2, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 2, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,46
LINKS
MATHEMATICA
DigitCount[#, 10, 9]&/@Prime[Range[110]] (* Harvey P. Dale, May 08 2018 *)
PROG
(Haskell)
a085983 = count9 0 . a000040 where
count9 c x | d == 9 = if x < 10 then c + 1 else count9 (c + 1) x'
| otherwise = if x < 10 then c else count9 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, 6's A085980, 7's A085981, 8's A085982.
Sequence in context: A325562 A176917 A302110 * A285701 A088183 A308470
KEYWORD
base,nonn
AUTHOR
Jason Earls, Jul 06 2003
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)