a(1)=1, then a(n)=3*a(n-1) if n is already in the sequence, a(n)=2*a(n-1) otherwise.
1, 2, 4, 12, 24, 48, 96, 192, 384, 768, 1536, 4608, 9216, 18432, 36864, 73728
3 seqfan posts
Thu Mar 12 01:14:18 CET 2009 [seqfan] Re: some gp/pari code in OEIS returns rationals, not integers
Wed Mar 11 22:50:52 CET 2009 [seqfan] Re: some gp/pari code in OEIS returns rationals, not integers
Wed Mar 11 15:45:15 CET 2009 [seqfan] some gp/pari code in OEIS returns rationals, not integers
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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