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A121032 Multiples of 12 containing a 12 in their decimal representation. 35
12, 120, 312, 612, 912, 1128, 1200, 1212, 1224, 1236, 1248, 1260, 1272, 1284, 1296, 1512, 1812, 2112, 2124, 2412, 2712, 3012, 3120, 3312, 3612, 3912, 4128, 4212, 4512, 4812, 5112, 5124, 5412, 5712, 6012, 6120, 6312, 6612, 6912, 7128, 7212, 7512, 7812 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 12n. - Charles R Greathouse IV, Nov 02 2022
MATHEMATICA
Select[12*Range[700], SequenceCount[IntegerDigits[#], {1, 2}]>0&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 25 2017 *)
PROG
(Haskell)
import Data.List (isInfixOf)
a121032 n = a121032_list !! (n-1)
a121032_list = filter ((isInfixOf "12") . show) a008594_list
-- Reinhard Zumkeller, Dec 12 2012
(PARI) is(n)=if(n%12, return(0)); while(n>11, if(n%100==12, return(1)); n\=10); 0 \\ Charles R Greathouse IV, Feb 12 2017
CROSSREFS
Subsequence of A008594.
Sequence in context: A110423 A006953 A164877 * A188251 A093334 A001816
KEYWORD
nonn,base,look,easy
AUTHOR
Reinhard Zumkeller, Jul 21 2006
EXTENSIONS
Data fixed by Reinhard Zumkeller, Dec 12 2012
STATUS
approved

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Last modified March 4 11:02 EST 2024. Contains 370528 sequences. (Running on oeis4.)