[go: up one dir, main page]

login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A066871 Harshad (or Niven) amicable pairs: numbers which belong to an amicable pair in which both terms are Harshad (or Niven) numbers. 1
2620, 2924, 10634085, 14084763, 23389695, 25132545, 34256222, 35997346, 46521405, 53011395, 63560025, 65003175, 80422335, 82977345, 120812175, 126671985, 190888155, 194594085, 256948065, 263110815, 281499435, 297034965 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
In first 5000 amicable pairs, there are 192 Harshad amicable numbers.
LINKS
Shyam Sunder Gupta, Amicable Numbers.
EXAMPLE
a(1) = 2620 and a(2) = 2924, where a(1) and a(2) are Harshad numbers and also (2620, 2924) is an amicable pair.
CROSSREFS
Sequence in context: A257420 A254236 A252440 * A180650 A245008 A180330
KEYWORD
nonn,base
AUTHOR
Shyam Sunder Gupta, Jan 21 2002
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 30 21:29 EDT 2024. Contains 375550 sequences. (Running on oeis4.)