1,3
T. D. Noe, Table of n, a(n) for n=1..1000
Sequence in context: A032581 A062504 A102489 this_sequence A032998 A032871 A032344
Adjacent sequences: A004835 A004836 A004837 this_sequence A004839 A004840 A004841
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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