9,1
Cf. A047892.
Sequence in context: A001019 A074118 A050739 this_sequence A061587 A033145 A101601
Adjacent sequences: A047898 A047899 A047900 this_sequence A047902 A047903 A047904
easy,nonn
Miklos SZABO (mike(AT)ludens.elte.hu)
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