1,2
See A039672 for definition.
Adjacent sequences: A039677 A039678 A039679 this_sequence A039681 A039682 A039683
Sequence in context: A125424 A163147 A120918 this_sequence A016134 A045507 A155595
nonn,base
Felice Russo (felice.russo(AT)katamail.com)
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