1,11
a(n) = (A047993(n) - A000700(n))/2
Cf. A000700, A000701, A047993.
Sequence in context: A001996 A122134 A035940 this_sequence A058686 A078374 A027590
Adjacent sequences: A067769 A067770 A067771 this_sequence A067773 A067774 A067775
easy,nonn
Naohiro Nomoto (n_nomoto(AT)yabumi.com), Feb 06 2002
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