0,2
A003422[ n ] + n.
Sequence in context: A104448 A062466 A053564 this_sequence A084816 A055738 A053365
Adjacent sequences: A036778 A036779 A036780 this_sequence A036782 A036783 A036784
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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