1,1
Cf. A001595.
Sequence in context: A158878 A077779 A146318 this_sequence A096058 A120265 A158328
Adjacent sequences: A145909 A145910 A145911 this_sequence A145913 A145914 A145915
nonn
Howard Berman (howard_berman(AT)hotmail.com), Oct 24 2008
Extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Oct 26 2008
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