1,4
Cf. A002385, A033938.
Sequence in context: A123139 A027599 A058160 this_sequence A021020 A007320 A007321
Adjacent sequences: A033936 A033937 A033938 this_sequence A033940 A033941 A033942
nonn,base
Calculated by Jud McCranie (j.mccranie(AT)comcast.net)
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