516643

Properties

Appears in sequences

• Expansion of the exponential series exp( x M(x) ) = exp( (1-sqrt(1-2x-3x^2))/(2x) ), where M(x) is the ordinary generating series of the Motzkin numbers A001006.at n=7A080894
• Poincaré series for invariant polynomial functions on the space of binary forms of degree 20.at n=20A293942
• Prime numbersat n=42795