login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A061819 Multiples of 3 containing only digits 0,1,2,3. 7
0, 3, 12, 21, 30, 33, 102, 111, 120, 123, 132, 201, 210, 213, 222, 231, 300, 303, 312, 321, 330, 333, 1002, 1011, 1020, 1023, 1032, 1101, 1110, 1113, 1122, 1131, 1200, 1203, 1212, 1221, 1230, 1233, 1302, 1311, 1320, 1323, 1332, 2001, 2010, 2013, 2022, 2031 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Index entries for 10-automatic sequences.

FORMULA

a(n) = A007090(3n), i.e. can also be read as multiples of 3 (A008585) written in base 4.

EXAMPLE

132 is a term containing digits less than 4.

MATHEMATICA

Select[3*Range[0, 750], Max[IntegerDigits[#]]<4&] (* Harvey P. Dale, Jul 10 2014 *)

CROSSREFS

Cf. A061818.

Sequence in context: A043465 A074276 A055041 * A017197 A051369 A069538

Adjacent sequences:  A061816 A061817 A061818 * A061820 A061821 A061822

KEYWORD

nonn,base,easy

AUTHOR

Amarnath Murthy, May 28 2001

EXTENSIONS

Corrected and extended by Larry Reeves (larryr(AT)acm.org) and Henry Bottomley, May 30 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 18 12:16 EST 2019. Contains 329261 sequences. (Running on oeis4.)