52032

Appears in sequences

• Number of rational series having complexity n over the finite field F_2 in two non-commuting variables.at n=3A137342
• Triangular array read by rows. The n-th row is the expansion of (1+x)(1+2x+4x^2)...(1+nx+(nx)^2+(nx)^3+...(nx)^n).at n=22A185588
• Number of segments needed to draw (on the infinite square grid) a diagram of regions and partitions of n.at n=37A211026
• Number of Sidon subsets of {1,...,n} of size 4.at n=36A241688
• Number of integer compositions of n that are the first sums of a unique composition.at n=30A391644