Cototient(n) is a square and sets a new record for squares.
2, 6, 21, 24, 54, 96, 189, 216, 345, 384, 420, 796, 864, 1332, 1536, 1680, 2340, 3300
2 seqfan posts
Fri Mar 12 22:23:40 CET 2010 [seqfan] Re: seqs whose |differences| are 1,2,3,4,...
Fri Mar 12 21:40:10 CET 2010 [seqfan] Re: seqs whose |differences| are 1,2,3,4,...
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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