

A260850


Lexicographically earliest sequence such that for any n>1, n=u*v, where u/v = a(n)/a(n1) in reduced form.


1



1, 2, 6, 24, 120, 20, 140, 1120, 10080, 1008, 11088, 924, 12012, 858, 1430, 22880, 388960, 1750320, 33256080, 1662804, 3879876, 176358, 4056234, 10816624, 270415600, 10400600, 280816200, 10029150, 290845350, 9694845, 300540195, 9617286240, 35263382880
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OFFSET

1,2


COMMENTS

a(p) = p*a(p1) for any prime p.
a(n) = A008336(n+1) for n = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 21, 22, 23; are there other indexes with this property?


LINKS

Paul Tek, Table of n, a(n) for n = 1..3365
Paul Tek, PARI program for this sequence


PROG

(PARI) See Links section.


CROSSREFS

Cf. A008336.
Sequence in context: A110808 A284567 A065422 * A008336 A033643 A050211
Adjacent sequences: A260847 A260848 A260849 * A260851 A260852 A260853


KEYWORD

nonn


AUTHOR

Paul Tek, Aug 01 2015


STATUS

approved



