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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A112429 Carmichael numbers equal to the product of 6 primes. 9
 321197185, 413631505, 417241045, 496050841, 509033161, 611397865, 612347905, 638959321, 672389641, 832060801, 834720601, 868234081, 945959365, 986088961, 1074363265, 1177800481, 1210178305, 1256855041, 1410833281, 1481619601 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. J. Mathar, Table of n, a(n) for n = 1..14401 EXAMPLE a(1)=321197185=5*19*23*29*37*137 PROG (PARI) is(n)={omega(n)==6&&is_A002997(n)} \\ M. F. Hasler, Apr 14 2015 CROSSREFS Cf. A002997, A087788, A141711, A074379, A112428, A112430, A112431, A112432, A006931. Sequence in context: A331445 A331446 A184573 * A104923 A153753 A035794 Adjacent sequences:  A112426 A112427 A112428 * A112430 A112431 A112432 KEYWORD easy,nonn AUTHOR Shyam Sunder Gupta, Dec 11 2005 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.

Last modified June 30 22:18 EDT 2022. Contains 354945 sequences. (Running on oeis4.)