1029983

Properties

Appears in sequences

• Number of set partitions of [n] with alternating parity of elements.at n=15A274547
• a(n) sets a new record for the Lychrel number a(n) of 'Reverse and Add' steps, needed to reach a Lychrel number m < a(n) (i.e., its seed).at n=10A323975
• Prime numbersat n=80701