9075135301

Appears in sequences

• a(n) = Sum_{d|n} binomial(2*d-2,d-1).at n=18A066768
• Number of compositions of 3n in which the minimal multiplicity of parts equals n.at n=18A244174
• a(n) = binomial(2*(n - 1), n - 1) + 1.at n=19A323230
• a(n) = Sum_{d|n} binomial(n+d-2, n-1).at n=18A332508
• a(n) = Sum_{d|n} (n/d)^(d-1) * binomial(d+n-2,n-1).at n=18A363666
• a(n) = Sum_{d|n} (n/d)^(n-n/d) * binomial(d+n-2,n-1).at n=18A363667