1,1
Cf. A000040.
Sequence in context: A059698 A107190 A164776 this_sequence A141858 A062650 A107174
Adjacent sequences: A158081 A158082 A158083 this_sequence A158085 A158086 A158087
nonn,base,less,dumb
Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Mar 12 2009, Mar 18 2009
Definition corrected by N. J. A. Sloane, Mar 19 2009
a(12) from Alvin H. Belt (abelt3(AT)juno.com), May 20 2009
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