30844800

Appears in sequences

• Triangle T(n, k, q) = c(n,q)/( c(k,q)*c(n-k,q) ), where c(n, q) = Product_{j=1..n} f(n, q), f(n, q) = ( (1-q^n)*(1+(-1)^n) + n!*(1-(-1)^n) )/2, and q = 2, read by rows.at n=47A172427
• Triangle T(n, k, q) = c(n,q)/( c(k,q)*c(n-k,q) ), where c(n, q) = Product_{j=1..n} f(n, q), f(n, q) = ( (1-q^n)*(1+(-1)^n) + n!*(1-(-1)^n) )/2, and q = 2, read by rows.at n=52A172427
• G.f.: Sum_{n>=0} (n+3)^n * x^n / (1 + (n+3)*x)^n.at n=10A230056
• Triangle read by rows: the triangle in A034855, with the n-th row normalized by dividing it by n.at n=53A235595
• Numbers m such that A049417(A049417(m)) = k*m for some k where A049417 is the infinitary sigma function.at n=37A318182
• Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 - log(1-x^3)/x^2) ).at n=9A392886