358560

Appears in sequences

• Triangle read by rows: t(n,m)=If[m*(n - m) == 0, 1, n!*(1 - 1/Binomial[n, m])].at n=48A155194
• Triangle read by rows: t(n,m)=If[m*(n - m) == 0, 1, n!*(1 - 1/Binomial[n, m])].at n=51A155194
• Number of permutations of {1,...,n} avoiding adjacent step pattern up, down, up, up, up, up.at n=9A177547
• Number of permutations of {1,...,n} avoiding adjacent step pattern up, up, up, down, down, down.at n=9A177552
• Numbers n such that sigma(n+sigma(n)) = 5*sigma(n).at n=11A246912
• Triangle read by rows, T(n,k) = Sum_{i=0..n} (-1)^i*(k!)^i*(n*k-i*k)!, 0<=k<=n.at n=9A375304