login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A201016 Composite numbers whose product of digits is 4. 0
4, 14, 22, 114, 122, 141, 212, 221, 411, 1114, 1122, 1141, 1212, 1221, 1411, 2112, 2121, 2211, 11114, 11122, 11141, 11212, 11221, 12112, 12121, 14111, 21112, 41111, 111114, 111122, 111141, 111212, 111221, 111411, 112112, 112211, 114111, 121112, 121121, 121211, 122111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A107690 with respect to  A199987. Subsequence of A199983 (composite numbers whose multiplicative digital root is 4).

LINKS

Table of n, a(n) for n=1..41.

EXAMPLE

Number 122 is in sequence because 1*2*2=4.

CROSSREFS

Cf. A107690 (primes whose product of digits is 4), A199987 (numbers whose product of digits is 4).

Sequence in context: A298008 A279414 A199987 * A317734 A154046 A000054

Adjacent sequences:  A201013 A201014 A201015 * A201017 A201018 A201019

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Nov 25 2011

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 February 25 11:17 EST 2020. Contains 332234 sequences. (Running on oeis4.)