1,7
See A000162.
Sequence in context: A048649 A086751 A048281 this_sequence A028650 A028634 A028618
Adjacent sequences: A066270 A066271 A066272 this_sequence A066274 A066275 A066276
nonn
Brendan Owen (brendan_owen(AT)yahoo.com), Jan 01 2002
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