A121029 Multiples of 9 containing a 9 in their decimal representation.

9, 90, 99, 189, 198, 279, 297, 369, 396, 459, 495, 549, 594, 639, 693, 729, 792, 819, 891, 900, 909, 918, 927, 936, 945, 954, 963, 972, 981, 990, 999, 1089, 1098, 1179, 1197, 1269, 1296, 1359, 1395, 1449, 1494, 1539, 1593, 1629, 1692, 1719, 1791, 1809

Offset: 1

Author

Reinhard Zumkeller, Jul 21 2006

Keywords

• nonn
• base
• easy

Links

• Index entries for 10-automatic sequences.

Crossrefs

Intersection of A008591 and A011539.

Cf. A121041, A011531, A121022, A121023, A121024, A121025, A121026, A121027, A121028, A121030, A121031, A121032, A121033, A121034, A121035, A121036, A121037, A121038, A121039, A121040.

Programs

Mathematica

Select[9*Range[250],DigitCount[#,10,9]>0&] (* Harvey P. Dale, Feb 13 2022 *)

PARI

is(n)=n%9==0 && setsearch(Set(digits(n)), 9) \\ Charles R Greathouse IV, Feb 12 2017

Formula

a(n) ~ 9n. - Charles R Greathouse IV, Feb 12 2017

Extensions

Corrected by T. D. Noe, Oct 25 2006

Typo in comment fixed by Reinhard Zumkeller, Aug 13 2010