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A230959 If n is pandigital then 0 else (digits not occurring in decimal representation of n, arranged in decreasing order). 5
987654321, 987654320, 987654310, 987654210, 987653210, 987643210, 987543210, 986543210, 976543210, 876543210, 98765432, 987654320, 98765430, 98765420, 98765320, 98764320, 98754320, 98654320, 97654320, 87654320, 98765431, 98765430, 987654310, 98765410 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
a(0) > a(n) for n > 0;
a(A171102(n)) = 0 by definition, but also a(A050289(n)) = 0.
LINKS
MATHEMATICA
pd[n_]:=Module[{idn=Sort[IntegerDigits[n]]}, If[idn==Range[0, 9], 0, FromDigits[ Reverse[ Complement[ Range[ 0, 9], idn]]]]]; Table[pd[n], {n, 0, 30}] (* Harvey P. Dale, Nov 16 2023 *)
PROG
(Haskell)
import Data.List ((\\))
a230959 n = (if null cds then 0 else read cds) :: Integer
where cds = "9876543210" \\ show n
(Python)
def A230959(n): return int(''.join(sorted(set('9876543210')-set(str(n)), reverse=True)) or 0) # Chai Wah Wu, Nov 23 2022
CROSSREFS
Cf. A227362.
Sequence in context: A168436 A168435 A363963 * A234812 A287171 A136953
KEYWORD
nonn,base,look
AUTHOR
Reinhard Zumkeller, Nov 02 2013
STATUS
approved

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Last modified March 28 22:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)