33130

Appears in sequences

• Number of unlabeled 5-ary cacti having n polygons.at n=7A054363
• Maximum number of rational points on a smooth absolutely irreducible projective curve of genus 1 over the field F_2^n.at n=14A169872
• Array read by antidiagonals: T(n,k) is the number of (planar) unlabeled k-ary cacti having n polygons.at n=73A303912
• Expansion of (1/(1 - x)) * Sum_{k>=0} x^(2*k+1) / Product_{j=1..2*k+1} (1 - x^j).at n=34A306145