25280640

Appears in sequences

• Series reversion of (1 - t*x)*log(1 + x) with respect to x.at n=33A198204
• Irregular triangular array read by rows. T(n,k) is the number of n-permutations with exactly k distinct cycle lengths; n>=1, 1<=k<=floor( (-1+(1+8n)^(1/2))/2 ).at n=31A224211
• T(n,k) = (-1)^n*(binomial(2*k,k)/(k+1))*Sum_{j=0..n} (-1)^j*binomial(k,j)*j^n. Triangle read by rows, T(n, k) for n >= 0 and 0 <= k <= n.at n=42A335748
• Numbers k that have a record number of divisors that have the same binary weight as k.at n=33A381069
• Triangle read by rows: T(n,k) = Sum_{j=0..2k} (-1)^j * binomial(2k,j) * (k-j)^(2n).at n=25A387597