0,2
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Sequence in context: A161188 A093001 A026428 this_sequence A061054 A061723 A045506
Adjacent sequences: A030701 A030702 A030703 this_sequence A030705 A030706 A030707
nonn
Eric Weisstein (eric(AT)weisstein.com)
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