0,4
From a suggestion due to D. R. Hofstadter.
Sequence in context: A084300 A080917 A033726 this_sequence A021450 A092188 A097884
Adjacent sequences: A126765 A126766 A126767 this_sequence A126769 A126770 A126771
nonn
Greg Huber (huber(AT)alum.mit.edu), Feb 16 2007
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