The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A112450 Strong pseudoprimes (base-2) equal to product of 3 primes not necessarily distinct. 1
15841, 29341, 52633, 74665, 252601, 314821, 476971, 635401, 1004653, 1023121, 1907851, 1909001, 2419385, 2953711, 3581761, 4335241, 4682833, 5049001, 5444489, 5599765, 5681809, 9069229, 13421773, 15247621, 15510041, 15603391, 17509501, 26254801, 26758057, 27966709 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The term a(11)=1907851 is also a strong pseudoprime to base 5, cf. A020231. M. F. Hasler, Aug 16 2012
LINKS
EXAMPLE
a(1) = 15841 = 7*31*73.
CROSSREFS
Intersection of A014612 and A001262.
Sequence in context: A061733 A229643 A216180 * A063847 A367231 A265669
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta, Dec 12 2005
EXTENSIONS
More terms from Amiram Eldar, Nov 10 2019
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 June 16 15:23 EDT 2024. Contains 373432 sequences. (Running on oeis4.)