[seqfan] list of all non-prime coprimes of the full set of primorial numbers

[Jamie Morken]

Hi,

Here is a sequence I added as a draft: https://oeis.org/draft/A285510

It is a list of all non-prime coprimes of the full set of primorial numbers.

b-file: https://oeis.org/draft/A285510/b285510.txt

ie:
Pn(2) has 1 coprime: 1
Pn(6) has 2 coprimes: 1,5
Pn(30) has 8 coprimes: 1,7,11,13,17,19,23,29
Pn(210) has 48 coprimes: etc..

The sequence is a complete list of all non-prime coprimes for all Pn.  The sequence starts:

1,121,143,169,187,209,221,247,289,299,323,361,377,391,403,437,481,493,527,529,533,551,559,589,611,629,
667,689,697,703,713,731,767,779,793,799,817,841,851,871,893,899,901,923,943,949,961,989,1003,1007,....

Only large n values in the sequence will change when larger Pn are added to the set, values up to an increasingly
large n will not change as larger Pn are added.

cheers,
Jamie