2741760

Appears in sequences

• Expansion of e.g.f. 1/2-1/2*(1-4*x-4*x^2)^(1/2).at n=7A052727
• E.g.f. (1-sqrt(1-4x-4x^2))/2 -x*(1+x).at n=7A052739
• Expansion of e.g.f. (1 - x)^(-x^2).at n=10A353228
• Number of 2-color vertex orderings of the labeled path graph on n vertices in which the number 1 is assigned to a vertex in an even position.at n=10A360515