1,1
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Cf. A046112, A062875.
Sequence in context: A031065 A017113 A081770 this_sequence A085039 A038429 A008208
Adjacent sequences: A062873 A062874 A062875 this_sequence A062877 A062878 A062879
nonn,hard
Eric Weisstein (eric(AT)weisstein.com)
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