72910

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 54.at n=9A031732
• Sum of totients of binomial coefficients C(n,j), j=0..n.at n=18A064450
• a(n) = 100*n^2 + 10.at n=27A158492
• G.f. A(x,y) satisfies: Sum_{n=-oo...+oo} (x^n + y)^n = exp( (1-y) * A(x,y) ) / (1-y), where A(x,y) = Sum_{n>=1} x^n/n * Sum{k=0..n-1} T(n,k)*y^k, written here as a flattened triangle of coefficients T(n,k) read by rows.at n=57A321600