1,1
Cf. A052016, A048398, A006055.
Sequence in context: A052087 A006510 A006055 this_sequence A062088 A070029 A110094
Adjacent sequences: A052014 A052015 A052016 this_sequence A052018 A052019 A052020
nonn,base,fini,full
Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1999.
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