1,1
Cf. A000142, A035067.
Adjacent sequences: A035065 A035066 A035067 this_sequence A035069 A035070 A035071
Sequence in context: A108961 A017984 A035066 this_sequence A153643 A053218 A154690
nonn,hard,base
Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1998.
More terms from Frank.Ellermann(AT)t-online.de, May 30, 2001.
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