3,3
Lehmer, D. H. Some properties of circulants. J. Number Theory 5 (1973), 43-54.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Adjacent sequences: A003106 A003107 A003108 this_sequence A003110 A003111 A003112
Sequence in context: A044730 A086020 A056117 this_sequence A066607 A083200 A102353
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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