Characteristic function of squares: 1 if n is a square else 0.
1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0
5 seqfan posts
Fri Apr 16 08:02:33 CEST 2010 [seqfan] Re: A160242
Fri Apr 16 08:01:45 CEST 2010 [seqfan] Re: A160242
Thu Apr 15 12:24:41 CEST 2010 [seqfan] Re: A160242
Thu Apr 15 10:55:05 CEST 2010 [seqfan] Re: A160242
Thu Apr 15 10:36:40 CEST 2010 [seqfan] A160242
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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