4717440

Appears in sequences

• E.g.f. x(1-x)/(1-x-x^2).at n=9A052583
• Expansion of e.g.f.: (1-x^3)/(1-x-x^3).at n=9A052586
• Expansion of e.g.f. (1+3x-3x^2)/(1-x)^2.at n=9A052644
• a(n) = n!*(3*n-1)/2.at n=8A066118
• Triangle whose n-th row contains the n smallest numbers that are products of n distinct integers > 1, read by rows.at n=40A081957
• Triangle T(n,k) defined by Sum_{k=1..n} T(n,k)*u^k*x^n/n! = Product_{j>0} ( exp(j*x^j/(1 - x^j)) )^u.at n=36A338865
• a(n) = (1/5)*Product_{k=0..n} F(k)+5, where F=A000045 (Fibonacci numbers).at n=7A374986
• Triangle read by rows: T(n,k) = Sum_{j=0..2k} (-1)^j * binomial(2k,j) * (1+k-j)^(2n).at n=30A392337