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!)
A077555 Product of terms of n-th row of A077553. 4
4, 24, 216, 2160, 32400, 810000, 9525600, 238140000, 8334900000, 408410100000, 6051137400000, 296505732600000, 16307815293000000, 1255701777561000000, 151939915084881000000, 1074848105961630000000, 82763304159045510000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
If there are two sets of distinct composite numbers satisfying the above condition then the set with lesser product is chosen irrespective of the number of prime divisors. Perhaps the ambiguity may not arise. E.g., row 6 is 4,6,9,10,15,25. This row cannot be extended to get the next row without bringing in another prime because every number divisible by 2,3 or 5 will be a multiple of one of the previous terms. Hence in row 7, prime 7 has to be brought in and then we get a new set of numbers: 4,6,9,10,14,15,21.
LINKS
CROSSREFS
Sequence in context: A369723 A323869 A112141 * A166881 A334602 A183279
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Nov 10 2002
EXTENSIONS
More terms from Ray Chandler, Aug 21 2003
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 March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)