144395

Appears in sequences

• Number of non-isomorphic cylindrical arrangements of n pairwise intersecting pseudo-circles on a sphere, in the sense that two cells of the arrangement are separated by each of the pseudo-circles, reduced for mirror symmetry.at n=5A296411
• Number of partitions of the n-th triangular number n*(n+1)/2 into a triangular number of triangular parts.at n=21A344707