1130496

Appears in sequences

• Theta series of Leech lattice with respect to deep hole of type A_1.at n=3A004034
• Theta series of odd Leech lattice (the unique unimodular 24-dimensional lattice with minimal norm 3).at n=5A027859
• Expansion of ((1+x)/(1-2x))^2.at n=15A113070
• Number of catacondensed hexagonal systems with n hexagons.at n=15A121286
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood.at n=21A288053