60008

Appears in sequences

• Egyptian fractions: number of partitions of 1 into reciprocals of positive integers <= n.at n=24A020473
• Number of inequivalent tilings of a 4 X n rectangle using integer-sided square tiles.at n=12A359020
• a(n) = Sum_{k=0..floor(n/3)} binomial(2*(n-3*k),k) * binomial(2*(n-3*k),n-3*k).at n=9A361753