a(n) = product of primes (with multiplicity) of form 4k+1 that divide n.
1, 1, 1, 1, 5, 1, 1, 1, 1, 5, 1, 1, 13, 1, 5, 1, 17, 1, 1, 5, 1, 1, 1, 1, 25, 13, 1, 1, 29, 5, 1, 1
6 seqfan posts
Fri Jan 8 16:53:05 CET 2010 [seqfan] Re: Analogue of A170818; Product of distinct primes of the form 6n+1 (A002476 ) dividing n.
Thu Dec 24 07:42:43 CET 2009 [seqfan] Analogue of A170818; Product of distinct primes of the form 6n+1 (A002476 ) dividing n.
Wed Dec 23 21:36:31 CET 2009 [seqfan] Re: A170817, A170818 xref suggested
Wed Dec 23 21:27:56 CET 2009 [seqfan] Re: A170817, A170818 xref suggested
Wed Dec 23 21:12:24 CET 2009 [seqfan] Re: A170817, A170818 xref suggested
Wed Dec 23 19:51:50 CET 2009 [seqfan] A170817, A170818 xref suggested
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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