Least number which becomes prime or 4 after exactly n iterations of f(x) = sum of prime factors of x.
2, 6, 8, 14, 26, 62, 134, 393, 1257, 4659, 9314, 27933, 167073, 334142, 4677862
3 seqfan posts
Mon Oct 11 06:41:00 CEST 2010 [seqfan] Re: Incorrect Comment in A048133
Wed Oct 6 15:23:04 CEST 2010 [seqfan] Re: Incorrect Comment in A048133
Wed Oct 6 02:08:39 CEST 2010 [seqfan] Incorrect Comment in A048133
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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