0,4
a(3) = 2^3 = 8
Cf. A000045.
Sequence in context: A085524 A062481 A053089 this_sequence A029751 A035036 A138323
Adjacent sequences: A090238 A090239 A090240 this_sequence A090242 A090243 A090244
easy,nonn
Felix Tubiana (fat2(AT)columbia.edu), Jan 23 2004
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