42122

Appears in sequences

• Number of connected reduced partially ordered sets (posets) with n labeled elements.at n=5A066303
• Number of parts of even multiplicities in all the partitions of n.at n=39A264400
• Times on a 12-hour digital clock with 6 digits at which the angle of the sector enclosing the three continuously moving hands of an analog clock has a local minimum.at n=4A348758