2,4
Sequence in context: A067782 A035299 A021302 this_sequence A002374 A110560 A141424
Adjacent sequences: A004646 A004647 A004648 this_sequence A004650 A004651 A004652
nonn
N. J. A. Sloane (njas(AT)research.att.com), wild(AT)edumath.u-strasbg.fr (Daniel Wild)
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