53596

Appears in sequences

• Triangle read by rows: T(n,k) = Sum_{j=0..k-1} T(n,j) + Sum_{j=1..n-k} T(n-j,k), with T(0,0)=1 and T(n,k) = 0 for k > n.at n=41A059450
• O.g.f.: exp( Sum_{n>=1} (sigma(2n)-sigma(n))^n * x^n/n ).at n=5A177399
• Number of permutations p of [n] such that 0p has a nonincreasing jump sequence beginning with five.at n=8A292171
• Digits of the Copeland-Erdős constant taken in groups of five digits.at n=26A304652
• Number of unlabeled nonseparable (or 2-connected) multigraphs with n edges and degree >= 3 at each node, loops allowed.at n=12A360871