49192

Appears in sequences

• Number of 0's in all 2-compositions of n. A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n.at n=8A181294
• Number of set partitions of [n] into exactly nine parts such that no part contains two elements with a circular distance less than three.at n=4A261485