41449

Appears in sequences

• Maximal number of regions obtained by joining n points around a circle by straight lines. Also number of regions in 4-space formed by n-1 hyperplanes.at n=32A000127
• Place n equally-spaced points around a circle and join every pair of points by a chord; this divides the circle into a(n) regions.at n=32A006533
• Number of (7+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=22A250661
• The number of length 2n - 1 strings over the alphabet {0, 1} such that the first half of any initial odd length substring is a permutation of the second half.at n=22A297789
• G.f.: Sum_{n>=0} (n+1) * x^n * (1 + x^n)^n.at n=88A326002
• MM-numbers of crossing, capturing multiset partitions (with empty parts allowed).at n=29A326259
• Nonprime squarefree numbers whose prime indices all have the same Omega (A001222) and the same sum of prime indices (A056239).at n=22A327908