0,2
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Sequence in context: A074885 A091336 A002235 this_sequence A057128 A018534 A018276
Adjacent sequences: A030702 A030703 A030704 this_sequence A030706 A030707 A030708
nonn
Eric Weisstein (eric(AT)weisstein.com)
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