21585

Appears in sequences

• a(1)=1, a(n) is the smallest integer > a(n-1) such that the largest element in the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals n^2.at n=21A070902
• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-2.at n=19A211958
• Number of partitions of n+4 with largest inscribed rectangle having area <= n.at n=33A218625
• Number of prime parts in the partitions of n into 8 parts.at n=44A309437
• Number of unlabeled simple graphs without endpoints with n edges.at n=14A369290
• Number of partitions of prime(n) into squares.at n=42A379551
• The number of possible values that can be obtained for the Shannon diversity index across all partitions of n.at n=43A383683