a(1)=3; if n = Product p_i^e_i, n>1, then a(n) = Product p_{i+2}^e_i.
3, 5, 7, 25, 11, 35, 13, 125, 49, 55, 17, 175, 19, 65, 77, 625, 23, 245, 29, 275, 91, 85
3 seqfan posts
Thu Dec 24 03:23:23 CET 2009 [seqfan] Re: structure & sequences defined by "exotic multiplication"
Thu Dec 24 03:20:28 CET 2009 [seqfan] Re: structure & sequences defined by "exotic multiplication"
Thu Dec 24 03:08:02 CET 2009 [seqfan] structure & sequences defined by "exotic multiplication"
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
Links to OEIS content are included according to
The OEIS End-User License Agreement
.