1,4
a(4)=16
Sequence in context: A085538 A091363 A138407 this_sequence A025930 A125404 A021744
Adjacent sequences: A094854 A094855 A094856 this_sequence A094858 A094859 A094860
nonn
Alain Goupil (goupil(AT)math.uqam.ca), Jun 14 2004
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