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A054641 GCD of divisor-sum of primorials and primorials itself = GCD[A002110(n), A000203(A002110(n))]. +0
3
1, 6, 6, 6, 6, 42, 42, 210, 210, 210, 210, 3990, 3990, 43890, 43890, 43890, 43890, 1360590, 23130030, 23130030, 855811110, 855811110, 855811110, 855811110, 855811110, 855811110, 11125544430, 11125544430, 11125544430, 11125544430 (list; graph; listen)
OFFSET

1,2

COMMENT

1. Values are repeated for several arguments: observed from 1 to 8 times below n=100. Sites of jump seems not so regular. 2. From a sufficiently high value of n, A002110(n) divides the terms. E.g. from n=27, A002110(8) divides the values of this sequences.

CROSSREFS

A002110, A000203, A028815, A054640, A054642.

Sequence in context: A001734 A092937 A116571 this_sequence A024731 A098537 A131703

Adjacent sequences: A054638 A054639 A054640 this_sequence A054642 A054643 A054644

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), May 15 2000

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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