-1157

Appears in sequences

• E.g.f. sin(sin(x))/cosh(x) (odd powers only).at n=3A009480
• G.f.: Product_{k>=1} 1/(1+x^k)^k.at n=41A255528
• Start with 2, then successively subtract the primes 3, 5, 7, ...at n=25A282329
• Expansion of exp( Sum_{n>=1} -sigma(9*n)*x^n/n ) in powers of x.at n=7A283169
• Expansion of Product_{k>=1} (1 - prime(k)*x^k).at n=19A304791
• Column 1 of triangle A370041.at n=28A370154