84113

Appears in sequences

• a(n) is the number of symmetric domino towers with n bricks.at n=22A320314
• Number of integer partitions of n whose first differences (assuming the last part is zero) are not unimodal.at n=45A332284
• a(n) = n*a(n-1) + n^(n mod 2), a(0) = 0.at n=8A344419